I was wondering how well helicopter pilots or crew members can see people running around on the ground. I was wondering because choppers from Ft. Polk constantly fly over my house (chinooks, apaches, Blackhawks, cobras, UH1s). I've become good at sensing them coming and I run outside to get a look at them when they pass over(because their cool). Can they see me if I wave at them or something? Just wanted to know.