tracker
n.— «Morris explained that although amphibious operations are not a big part of Operation Iraqi Freedom, it is still important for the “trackers,” as AAV crewmen are commonly called, to be prepared for any type of operation.» —“AAVs storm Atlantic” by Lucian Friel in Camp Lejeune, N.C Marine Corps News Jan. 12, 2006. (source: Double-Tongued Dictionary)