A firing line safety observer uses binoculars to check for target accuracy. A firing line safety observer uses binoculars to check for target accuracy while sailors fire M-16 rifles during a small-arms qualifications aboard the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75) while underway in the Atlantic Ocean on Aug, 1, 2005. Truman is conducting carrier qualifications and sustainment operations off the East Coast. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 368721-W-UMJ51-158.jpg Photo Gallery