Article Photos: Profiles of 7 Nev. Army depot explosion victims 10/12

This undated photo provided by the U.S. Marines shows Lance Cpl. Roger W. Muchnick Jr. of Fairfield, Conn. Muchnick, 23, was killed with six other Marines in an explosion during a Nevada training exercise on Monday, March 18, 2013. (AP Photo/U.S. Marines)