U.S. Army Reserve drill sergeants Maurice Tucker, of West Palm Beach, Fla., and Kristina Martinelli of Columbia, South Carolina, both Sgt.'s 1st Class with Company B., 1st Bn., 321st Inf. Reg., case the colors after a change of command ceremony at Fort Jackson, June 13, 2015. (U.S. Army photo by Sgt. Ken Scar)