Sgt. Joseph Sullivan uses a portable inductive fuse setter. Sgt. Joseph Sullivan uses a portable inductive fuse setter to set and activate rounds to be fired from an M-777 howitzer during a training exercise on Forward Operating Base Salerno, Afghanistan, on Feb. 28, 2008. Sullivan is an ammo team chief with the U.S. Armyís 3rd Battalion, 321st Field Artillery Regiment, 18th Field Artillery Brigade. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 974691-J-QEA57-791.jpg Photo Gallery