The signature sound of the Fairchild engines, and the Avenger canon, are awesome. Having been under or around Warthogs off and on, that sound... wow. Go ugly early.
We are in line with the Air Force Academy and fly overs, so when not on Academy grounds and seeing up close demonstrations, get to hear then see all kinds of airframes overhead all year. Last week as the plebes came into the Academy, something, never saw it but *definitely* heard it, flew over to give the new class some incentive. From the sound of things, they were doing a lot of maneuvers as one could hear the engines accelerating, then air brakes. Had to be some impressive stuff going on based on the sounds.
By far the spookiest sensation is being under a B-2 Stealth bomber as it wafts over. Eerie.