Silent orange orbs fly very low and disappear.I saw two orange orbs from my backyard.Both were moving in different directions, one west, the other north-east.The lights looked very low, and didn't flicker or wobble.No sound, as one flew nearly directly overhead.I called my girlfriend outside, who managed to witness one before we lost sight.They followed a straight path before disappearing behind trees and houses.I work at night at a busy airport, and I have never witnessed anything like it.Unsettling because of their altitude and how close to home they were, and their silence.A friend of mine several blocks to my north witnessed five orange orbs in a formation while looking my direction, on the same evening.He watched them disappear all at once, "as if turning off an old TV." Best rational explanation I can think of is Chinese lanterns or drones, though those explanations don't satisfy me.