My buddy owns his own lawn company and was working with his mexican crew when in the middle of a sunny day, a large triangle aircraft flew right above them. He said there was no sound at all and it was right above the tree line. He said he could have threw a rock at it. It freaked them all out, the Mexicans stopped working and went home. My buddy does not even like to talk about it. I always tease him telling him he is marked and one day they will come back and grab him. My guess is that it was some type of military aircraft, but who knows.