No disrespect meant here and this might be kind of morbid, but does our girl Bea have the inside scoop? Were you around when it happened Bea?
About 20+ years ago when i was a kid my grandmother (who lived at the towers) was CONSTANTLY yelling at all of us grandkids to stop playing on the window sill. The screens were very flimsy. Ironically she lived on the 7th floor too.