> Detectives were understood to have drawn up a shortlist of potential culprits after the pilot gave vital clues away by audaciously flying the drone right up to the air traffic control tower.
> In a move known as "buzzing the tower", it emerged the perpetrator had taunted airport staff by circling the drone around the building and flashing its lights, an industry source told The Daily Telegraph.
https://uk.news.yahoo.com/police-prepared-shoot-down-drone-0...
> Detectives were understood to have drawn up a shortlist of potential culprits after the pilot gave vital clues away by audaciously flying the drone right up to the air traffic control tower.
> In a move known as "buzzing the tower", it emerged the perpetrator had taunted airport staff by circling the drone around the building and flashing its lights, an industry source told The Daily Telegraph.