Chief Master Sgt. Jason A. Breitmaier, superintendent 855th Aircraft Maintenance Squadron (AMXS) and Maj. Jonathan J. St Peter, commander 855th AMXS, unveil the 855th AMXS guidon at a redesignation ceremony at Nellis Air Force Base, Nev., Jul. 11, 2019. The 855th AMXS maintains and repairs HH-60G