ZEROING IN U.S. Marine Lance Cpl. Michael J. Iacone of Providence, R.I., uses an M49 spotting telescope to call shots as Staff Sgt. Claudio T. Sanchez zeroes a Mark-12 rifle at a marksmanship range located on Marine Corps Base Quantico, Va., March 13, 2008. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 349245-S-QUT34-191.jpg Photo Gallery