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Scenario 3: Drone over the Base  |  UAV Threat
👁 Drone Sighting

Unknown UAV
Over Base

You are off duty, unarmed, and alone when you spot an unknown drone near a communications building. No radio. No weapon. How do you respond?

B1 to B2 45 to 60 min Field Report 🎧 Listening

The same scenario in Fast and Clear

Key Language Focus
Hedging language under uncertainty • Precise observation reporting • Describing bearing and altitude • Alerting without causing panic
Please note: These scenarios are fictional and written for English-language practice only. The actions, priorities and answers in them are what the characters in each story chose to do. They are not military advice, doctrine, standard procedure or operational training, and they do not replace your own unit's or organisation's procedures and orders. This course is not produced or endorsed by NATO. Please do not enter real or sensitive information.

Scenario Setup

Eastern Perimeter, Valholm Air Base

📍 Setting

Eastern perimeter walking path, Valholm Air Base. Friday, 16:42 local time. You are off duty, in civilian clothes, on a routine walk. You have your personal mobile phone. No weapon, no radio, no uniform.

👥 Key People

Cpl. Lucia Benova (you) -- Off-duty soldier
Sgt. Varga -- Duty NCO at the base desk
Capt. Polak -- Base Security Officer
Two civilians -- walking nearby on the path

📚 Language Focus

Hedging: "it appeared to be", "I could not determine whether" • Precise description: bearing, altitude, speed • Urgent but calm communication • Alerting without triggering panic

⚒ Your Role

Off-duty enlisted soldier, in civilian clothes. No authority to detain or engage. In this story, you want to stay calm and avoid causing a public panic.
Vocabulary
UAV -- Unmanned Aerial Vehicle, commonly called a drone
bearing -- the compass direction of an object, e.g. "bearing 045" means north-east
altitude -- height above the ground, usually estimated in metres
surveillance -- the act of watching or monitoring an area or person
quadcopter -- a drone with four rotors, the most common type
perimeter -- the outer boundary or fence line of a military installation

Reporting Framework  |  Eastern Perimeter Incident

How to Structure Your Report

Every field report in this course follows the same four parts. Here are the first two for this incident. You will discover the rest as you work through the scenario.

1

Situation

When, where, who, and what happened.

At 16:42 on Friday, while off duty on the eastern perimeter path, Cpl. Benova observed what appeared to be a quadcopter-type drone at an estimated 40 metres altitude, bearing 270, which seemed to be hovering near the base communications building. She was alone, unarmed, and without a radio.

2

Task

Your role and what you were required to do.

As an off-duty soldier with no radio, no weapon and no authority to detain or engage, the task was to respond to the sighting within those limits.

3

Action

The steps taken, in order. Use sequence words: First... Then... Finally...

You will read what Cpl. Benova did on slide 6.

4

Result

The outcome, and any follow-up. Use the passive voice where you can.

You will hear and read the outcome on slide 7.

Read the Incident

Timeline: Eastern Perimeter

16:42

First Contact

You are off duty, walking the eastern perimeter path. You hear a faint buzzing sound from above and to your west. You look up and observe a dark-coloured quadcopter at approximately 40 metres altitude, bearing 270 from your position, moving slowly toward the communications building. The drone appears to be hovering, not simply passing through.
16:42

You Must Act

Two civilians are walking nearby on the same path. They have not noticed the drone. You have your personal mobile phone, but no radio, no weapon and no uniform. The base duty desk is staffed by Sgt. Varga. You must act.
Language Note: Hedging Under Uncertainty
When you are not certain of a fact, use hedging language:
"It appeared to be a quadcopter-type UAV." (not "It was a quadcopter.")
"I could not determine whether it was armed." (not "It wasn't armed.")
"The drone seemed to be hovering over the building." (not "It was hovering.")
Hedging is not weakness -- it is accurate, professional communication.

Priority Decision

What Would You Do First?

You have just spotted the drone.

Tap or click the actions in the order you would choose, most urgent first. Then compare your order with the one Cpl. Benova followed in this story. Select a card again to take it out of your order.

Maintain visual observation -- keep the drone in sight from cover
Call the duty desk and report the sighting immediately
Note identifying details -- colour, size, rotor count, bearing, altitude
Quietly move nearby civilians away from the area

0 of 4 in your order.

Soldier Actions

How Cpl. Benova Responded

Read each action step. Open each step for the detail and the key language used.

0 of 5 steps opened

At 16:43, Cpl. Benova did not run or react visibly. She moved at a normal walking pace to the tree line, maintaining visual contact with the drone at all times. Moving to cover served two purposes: she was less visible to any camera on the drone, and she had a stable position from which to observe and make a phone call.

Key language: When reporting, she would say: "I am currently at the eastern tree line, bearing 090 from the main gate. I can still observe the UAV."
At 16:44, Cpl. Benova used her personal phone to call the base duty desk. She identified herself and gave a structured verbal report: who she was, her location, what she could see, and what the drone was doing. She spoke clearly and calmly, did not speculate about intent, and used hedging language for facts she could not confirm.

Key language: "This is Corporal Benova, off duty, eastern perimeter. I am observing what appears to be an unknown UAV, approximately 40 metres altitude, bearing 270, near the comms building. It appeared to be a quadcopter. I cannot confirm whether it is armed. I am maintaining observation."
While on the phone and after the call, Cpl. Benova continued to note the drone's characteristics in her memory -- and wrote them on a note in her phone. She recorded: approximate size (30cm width), dark colour (possibly black or dark grey), four rotors, a possible camera attachment beneath the body, heading (a slow drift to the west), no visible markings or lights.

Key language: "The object appeared to be approximately 30 centimetres in width, dark in colour -- possibly black -- with four visible rotors. There seemed to be a camera or sensor attached beneath the main body. No visible markings were observed."
Straight after the call, Cpl. Benova needed to move two civilians away from the area without revealing the security concern, which could cause a public incident or tip off anyone operating the drone remotely. She used a simple social pretence -- mentioning the recreation centre -- to move them without alarm. This required calm body language and a natural tone.

Key language: "Excuse me, I think they've just opened the coffee bar at the rec centre -- much warmer over there." (A natural, friendly approach. No urgency in voice or manner.)
Sgt. Varga dispatched a security team immediately after the call. Two armed security personnel arrived at 16:46, and Capt. Polak arrived at 16:48 and assumed command. Cpl. Benova delivered a concise briefing to Capt. Polak: current position of the drone, its bearing and altitude, all details noted, actions she had already taken. She did not speculate about the operator's intent. She handed over and moved to a safe distance as instructed.

Key language: "Sir -- the UAV was last observed at bearing 265, approximately 35 metres altitude, heading slowly west. I called the duty desk at 16:44. Two civilians have been moved to the rec centre. I have notes on the description in my phone. I am ready to hand over."
Notice the language

Hedging words such as appeared to be, approximately and could not confirm show how sure the speaker is. Which of these sentences hedge? Select all that do, then check.

"Appeared to be", "could not confirm whether" and "approximately" tell the listener how certain you are. The other three state a guess as a fact: nobody in the story saw a weapon, an operator or any filming.

Outcome

How the Incident Was Resolved

🎧 Listening Check  |  B1 practice

Listen to the Valholm Security Operations broadcast. Answer the three questions below: the first is about the message as a whole, the others about details. Notice how this broadcast uses precise language and avoids speculation. Replay the audio as many times as you need. The transcript and the rest of the story appear when your answers are marked: when all are right, or after your second check. If you cannot use the audio, press Show transcript.

Press Play to begin.
1. What is the purpose of this broadcast?
To warn all personnel of a drone sighting and ask for further reports.
To order all personnel to leave the sector at once.
To announce that the drone was intercepted and the alert is over.
2. In which grid sector was the drone observed?
Sector three.
Sector five.
Sector seven.
3. On what heading did the drone depart?
(bearing = direction from the observer to the drone; heading = the direction the drone flew)
Zero one zero.
Zero three zero.
Two seven zero.
Transcript: "All stations, all stations. This is Valholm Security Operations. UAV alert. At sixteen forty-two local, an unknown drone was observed near the communications building in grid sector seven. The drone was assessed as a commercial surveillance model. It departed at sixteen fifty-one on a heading of zero three zero. No personnel were injured. No equipment was damaged. The sighting is currently classified as probable hostile surveillance, pending further investigation. All personnel: report any further sightings immediately to security operations. A formal UAV alert is now in effect for this sector. Security Operations, out."
16:51: Drone Departs
The drone turned and departed the area at 16:51, approximately nine minutes after Cpl. Benova's first sighting. It was not intercepted. Security personnel documented its departure direction and last known altitude.
17:10: Assessment
Capt. Polak assessed the drone as probably a small commercial quadcopter, possibly used to watch the communications building. The assessment was classified as "probable hostile surveillance" pending further investigation.
17:30: Report and Alert
A formal UAV alert was issued for the Valholm Air Base sector. Cpl. Benova submitted a written observation report. Capt. Polak commended her response: "You maintained observation, reported accurately using hedging language where appropriate, and cleared the area without incident. That was clear reporting."
Language Note: Hedging vs. Speculation
Hedging describes what you observed accurately: "It appeared to be a camera."
Speculation adds opinion beyond evidence: "It was definitely photographing the building."
Hedging shows how sure you are. Speculation can mislead decision-makers. Use phrases like: "appeared to be", "I could not confirm", "seemed to", "possibly", "approximately".

Comprehension Check

Check Your Understanding

B1 to B2 practice

Answer the four questions at your own pace. If you choose an answer that is not the best one, you will see why, and you can try again. There is no grade.

Question 1 of 4
According to the story, why did Cpl. Benova move to the tree line before calling the duty desk?
Because she needed better phone signal near the trees
Because a base rule told her to take cover before any report
To get closer to the communications building
To watch from cover, where she was less visible to any camera on the drone
Question 2 of 4
Which sentence is the best example of clear hedging language?
The object appeared to be a quadcopter-type UAV at approximately 40 metres altitude.
The drone was a commercial model used for surveillance of the building.
I think it might have possibly maybe been a drone or something like that.
There was definitely an enemy drone above the communications building.
Question 3 of 4
According to the story, why did Cpl. Benova mention the coffee bar to the civilians?
Because the recreation centre was the designated shelter point for UAV alerts
Because base rules forbid soldiers from mentioning drones to civilians
To avoid causing public panic and potentially alerting the drone operator
Because she was not sure she had seen a drone
Question 4 of 4
In the sentence "The object seemed to be moving slowly westward," what does seemed to be signal?
The speaker is confused and does not know what they saw
The speaker is describing their observation while acknowledging they cannot be completely certain
The object was definitely not moving westward
The speaker is speculating without having observed anything
✅
All four questions answered correctly
You found the story's answers and practised hedging language. Now write your own field report.
Recall the key words

Choose the word that completes each sentence from the story. Check your answers when all six are chosen.

Writing Exercise

Write Your Observation Report

B2 practice

You are Cpl. Benova. Write a formal observation report to Capt. Polak using the reporting framework. Do not use real names, places or operational details. Use hedging language where appropriate.

Before you write: a complete report has
1. Situation: the time, your position, the estimated altitude and bearing, and "appeared" for what you could not confirm.
2. Task: your responsibility as an off-duty soldier without a radio.
3. Action: the steps in the story's order: observe, report, note details, move the civilians, with hedging rather than speculation.
4. Result: the departure time and heading, Capt. Polak's assessment and the UAV alert.

Short version: if you have little time, write the Situation and the Action only, about 60 words. The preview, the model answer and the debrief work the same.

When were you there, what were you doing, and what did you first observe? Use bearing and altitude if possible.
Try starting with: "At 16:42 on Friday, I was off duty on the eastern perimeter walking path when I observed what appeared to be..."
0 words  (aim for 40+)
What was your responsibility as an off-duty soldier? What were you required to do with no weapon or radio?
Try starting with: "As an off-duty soldier without a radio or weapon, my task was to..."
0 words  (aim for 15+)
List the steps in order, with times where possible. Use the past simple for what you did ("I called the duty desk") and the passive when the person who acted is not important ("the area was cleared"). Use hedging language for facts you could not confirm.
Try starting with: "I first moved to the tree line to maintain observation without being seen. At 16:44 I called the duty desk and reported..."
0 words  (aim for 60+)
What happened as a result? What did security assess? What was issued?
Try starting with: "Base security arrived at 16:46. The drone departed at 16:51. Capt. Polak assessed..."
0 words  (aim for 30+)
Situation

At 16:42 on Friday, while off duty on the eastern perimeter walking path, I observed what appeared to be an unknown quadcopter-type UAV at an estimated altitude of 40 metres, bearing 270 from my position, near the base communications building. It seemed to be hovering rather than passing through. I was in civilian clothes, with my personal mobile phone but no radio or weapon. Two civilians were walking nearby on the path.

Task

As an off-duty soldier with no authority to detain or engage, my task was to observe and report the sighting through the means available to me, and to act without causing public panic.

Action

At 16:43 I moved at a normal walking pace to the tree line, where I could keep the drone in sight without being visible to any camera on it. At 16:44 I called the duty desk on my personal phone and reported my identity, my location and what I could see, using hedging language for details I could not confirm. During and after the call, I noted the drone's description: approximately 30 centimetres wide, dark in colour, four rotors, a possible camera beneath the body, and no visible markings. I then walked calmly to the two civilians and suggested they move to the recreation centre, without mentioning the drone. When Capt. Polak arrived at 16:48, I briefed him on my observations and handed over.

Result

Two security personnel arrived at 16:46. The drone departed at 16:51 on a heading of 030 (north-north-east) and was not intercepted. Capt. Polak assessed it as probably a small commercial quadcopter, possibly used to watch the communications building, pending further investigation. A formal UAV alert was issued for the base sector, and I submitted this written observation report.

Note: Compare your report against this model. Check: (1) Does your Situation include the time, your position, the estimated altitude and bearing, and "appeared" for details you could not confirm? (2) Does your Action follow the order in the story: observe, report, note details, move the civilians? (3) Did you use hedging language rather than speculation? (4) Does your Result include the departure time and heading, Capt. Polak's assessment and the UAV alert?

Debrief & Lessons Learned

Prepare Your Debrief

B2 practice

Reporting under uncertainty is useful beyond drones. This slide helps you turn your report into a short spoken briefing. A version for a group is folded below.

Three Useful Debrief Questions
Be specific about what worked well. Example: "Cpl. Benova moved to cover without reacting visibly, which probably reduced the risk of alerting the drone operator. She used hedging language throughout her phone report, which gave the duty NCO accurate information without speculation. She documented the drone's characteristics in real time, which produced a reliable written record." Naming what worked well helps the whole group learn from it.
Name challenges without blame. Example: "Being off duty and without a radio meant Benova had to use her personal phone, which may be slower and less secure than a radio. Moving the civilians without explaining why needed a calm, natural approach. The drone's altitude made detailed identification difficult." Naming constraints honestly is more useful than pretending they did not exist.
Propose specific improvements. Example: "If I were in this situation again, I would save the duty desk number in my phone before going off duty, so it is ready the moment I need it. I would also have a pre-agreed signal phrase to move civilians without revealing the security concern." Consider also: what preparation would have helped?
Language: Presenting Your Briefing
Opening: "I am going to brief you on an unknown UAV sighting at the eastern perimeter of Valholm Air Base at 16:42 on Friday."
Structuring your report: "The situation was... My task, as the only military person present, was... The actions I took were... The result was..."
Using hedging in your verbal briefing: "I could not confirm whether the drone was armed. It appeared to be a quadcopter. I estimated the altitude at approximately 40 metres."
Stating a lesson: "For me, the key lesson is that hedging language is not weakness -- it is accuracy. Speculation in a UAV report could trigger a disproportionate response."
Inviting questions: "Does anyone want to ask about my decision not to approach the drone or challenge it directly?"
Closing: "That concludes my observation report. I am ready for the debrief."
Your Task: Your Briefing

Record a 2-minute verbal briefing from your written report on your phone, as if you were briefing your commander. Use hedging language for every fact you could not fully confirm (appeared to be, could not confirm, approximately).

Listen back and count the hedging phrases you used. Then answer the three questions above in writing, one sentence each.

Key question for you: "How does hedging language protect the people who will act on your report? What could go wrong if Cpl. Benova had said 'The drone is armed and conducting hostile surveillance' rather than 'It appeared to have a camera attachment and I could not confirm whether it was armed'?"

With a group: the small-group briefing and debrief
If You Are Leading the Debrief Meeting
Open clearly: "This debrief covers the eastern perimeter UAV sighting. We have three minutes. Three questions."
Signal transitions: "Good points. Let's move to what was difficult -- what constraints did Cpl. Benova face that were not her fault?"
Invite contributions: "Who wants to comment on the decision not to tell the civilians directly about the drone?"
Manage time: "One more contribution on this point, then we move to recommendations."
Summarise: "So, several of you think the main difficulty was ... One suggestion was ... Have I missed anything?"
Close: "To finish: in this story, Cpl. Benova kept the drone in sight, reported with hedging language and noted what she saw. Thank you for your ideas."
Your Task: Briefing and Debrief in Small Groups

Work in groups of three. Each round has three roles. The Briefer gives a 2-minute verbal briefing from their written report. The Chair leads a 3-minute debrief with the three questions above, using the phrases for leading a debrief. The Listener asks one question and writes down one phrase they want to use themselves.

Then rotate the roles and repeat, so that everyone briefs once and chairs once: three rounds, about 18 minutes. If several groups are working together, come together afterwards for about 5 minutes: each group shares one sentence it liked, and everyone discusses the key question below.

Briefer: use hedging language for every fact you could not fully confirm (appeared to be, could not confirm, approximately).

Key discussion question for the group: "How does hedging language protect the people who will act on your report? What could go wrong if Cpl. Benova had said 'The drone is armed and conducting hostile surveillance' rather than 'It appeared to have a camera attachment and I could not confirm whether it was armed'?"

This is the last scenario in the course. Your progress across its activities is shown below.

Two ways to say it

Same scenario, two ways. Choose by who is listening and what they understand. Know the formal words? Saying it simply is often the harder skill: try it in Fast and Clear. Know the short way? Learn the formal words here.

Fast and ClearDrone. Near the comms building. About four zero metres.
Full and DetailedAt 16:42 on Friday, while off duty on the eastern perimeter walking path, I observed what appeared to be an unknown quadcopter-type UAV at an estimated altitude of 40 metres, bearing 270 from my position, near the base communications building.
Fast and ClearI walk to the trees. I watch it.
Full and DetailedAt 16:43 I moved at a normal walking pace to the tree line, where I could keep the drone in sight without being visible to any camera on it.
Fast and ClearNot sure if armed.
Full and DetailedI cannot confirm whether it is armed.
Fast and ClearPlease come this way. The coffee bar is open.
Full and DetailedI then walked calmly to the two civilians and suggested they move to the recreation centre, without mentioning the drone.
Fast and ClearCaptain, here is what I saw. I hand over.
Full and DetailedWhen Capt. Polak arrived at 16:48, I briefed him on my observations and handed over.
Fast and ClearDrone gone at 16:51. Nobody stops it.
Full and DetailedThe drone departed at 16:51 on a heading of 030 (north-north-east) and was not intercepted.

The same scenario in Fast and Clear

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