A Mobile Training Team weapons instructor, Operation Cold Steel teaches a class on how to operate a mounted 50 cal. machine gun to a 419th Transportation Company Soldier during Combat Support Training Exercise 91-19-01, May 17, at Fort Hunter Liggett, Calif. Operation Cold Steel executes individual and vehicle crew-served weapons platform qualifications through multiple rotations. (U.S. Army photo by Staff Sgt. Kevin Spence/4th Cavalry Multi-Functional Training Brigade)