There was a Cpl RAFP at Northolt in the 70's who filed an insecurity report on 32 Sqn because he found that the door to the ALM's office had been left unlocked.
What he failed to notice was that the windows of the office had been removed by contractors and the replacement windows were neatly stacked outside.
Understandably,the last to leave the office could not see the point of locking the door.