Most have that fancy retractable A-gear, however, when I was at NAS New Orleans, our E-28s were not retractable, if they needed to be removed, T-Line had to go out and physically detach it, then put it back when the evolution was over. Also our P-3s loved to aim for it to knock it out of service. I know this because one time they hit it, keyed up and said "got it".