A letter - seen by the Watford Observer - has been sent to people living near Bovingdon Airfield Studios, warning them of what to expect on Thursday and Friday night (August 6 and 7). Bovingdon Airfield Studios. (Image: Bovingdon Airfield Studios)Warner Bros. will be using the site for filming between 7pm and 5am, with the letter stating that there will be "the firing of blank ammunition", which may "produce a loud bang". Residents have been reassured that these blanks do not contain any projectiles and therefore pose no risk to their safety. Movies that have used Bovingdon Airfield for filming in the past include Harry Potter and the Deathly Hallows, Fast & Furious 6, Fury, Rogue One: A Star Wars Story, Justice League, Bohemian Rhapsody, and 1917.