Two things:
First, its good to see A and C looking at the view of the maintenance person. Having worked on the apron at turnarounds for BA (Then BEA - I'm old enough, too!), I can concur with the sometimes difficult conditions in wind and rain at three in the morning. That is no excuse for laxity but bear in mind that sometimes things are difficult to see in those conditions. Been there and dunnit!
Second, with regard the stuff from aircraft falling out of the sky in populated areas, it's worth noting that the greatest number of people killed in the UK by falling debris was over a relatively unpopulated area (Lockerbie, Scotland, eleven people killed).We live on a densely populated island and if stuff falls out of the sky it could land anywhere. Fortunately, for the most part, stuff doesn't.