There was a squadron of them at Grissoa Air Base several years ago. My brother’s farm was one of their practice runs; he said you could hear them buzzing around, but not see them. Next thing you knew, they hopped a tree line, made a “run” at his barn or tractor if it was out, and then disappeared over the next tree line.
He never knew which direction they were coming from.
They used to buzz me on my bike. Nearly wrecked a couple of times. Brrrrrrrrrrrrrrrrrrrp.
They used to build A-10s at the Fairchild-Republic plant
up in Hagerstown, MD. The factory runway used to parallel
I-70 and occasionally I used to be able to see one take off or land as I was driving by.