Back when I was a "dink" at Camp USAFA (1979-1983) prior to an Army-Air Force game..
Several Chinook's came flying over the terrazzo of USAFA and dumped 1,000,000 "Psywar leaflets" about how badly we were going to lose base on our poor record that year, etc...etc...
It took us damn near forever to clean all that crap up!
And then we pounded them on Saturday on the field!
But it was a great feat on their part!