Place and time of interviews
| Place and time | No. of interviews |
|---|---|
| European Drone Expo 2017, Brussels, Belgium, March 10-12, 2017 | 19 |
| UAV Expo 2017, Brussels, Belgium, June 20-22, 2017 | 10 |
| European Drone Expo 2018, Brussels, Belgium, March 9-11, 2018 | 17 |
| UAV Expo 2018, Amsterdam, the Netherlands, April 11-12, 2018 | 7 |
| Zurich, Switzerland, May 17, 2017–September 4, 2018 | 5 |
| North Rhine-Westphalia, Germany, May 22-23, 2017 | 4 |
| Online video conference, May 12, 2017–August 15, 2018 | 4 |
| Total | 66 |
| Place and time | No. of interviews |
|---|---|
| European Drone Expo 2017, Brussels, Belgium, March 10-12, 2017 | 19 |
| UAV Expo 2017, Brussels, Belgium, June 20-22, 2017 | 10 |
| European Drone Expo 2018, Brussels, Belgium, March 9-11, 2018 | 17 |
| UAV Expo 2018, Amsterdam, the Netherlands, April 11-12, 2018 | 7 |
| Zurich, Switzerland, May 17, 2017–September 4, 2018 | 5 |
| North Rhine-Westphalia, Germany, May 22-23, 2017 | 4 |
| Online video conference, May 12, 2017–August 15, 2018 | 4 |
| Total | 66 |
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