The other night I was tail-end to a group of LVTs making a capture of a city. The carrier group had levelled the entire airbase via the computer-controlled battleship guns and there wasn't a single enemy around. The city happened to sit at the top of a bluff, so we were really crawling up that sand dune to get into the town. It was taking forever, and we were within 1.2 of each other. We really were a herd of turtles.
Just to liven things up, I jumped into the upper .50 cal gun and popped off a couple of rounds every now and then into the dirt on either side of the guys in front, just to keep the boys on their toes and frosty. Since I don't use tracers, they didn't know where the fire was coming from. It was kind of fun, like doing an infantry drill during war games.
Another time, my squadron was running a jabo op. We were staggered between 10k and 20k. As the flight droned on, one of the higher fighters made a high-speed guns pass on a lower fighter in front, firing his tracers over the top of the target fighter so that the pilot could see it bright as day. The exclamations coming over the radio were hilarious.
Sometimes friendly fire can be the best part of a sortie!
