I was directly under the flightpath of an HH-60 Pave Hawk as it headed out on a mission.  Looking up at the helo as it passed over, it was possible to see the feet of the crewman/gunner.  What I didn’t realize until I looked at the photos afterwards was that he was waving at me!  I wish I had waved back.  Given the large weapon mounted to the side of the airframe that he uses in action, I am glad that waving is what he chose to do!