Petty Officer 1st Class Delbert Corbin lines up sailors. U.S. Navy Petty Officer 1st Class Delbert Corbin (right) lines up sailors on a fire hose as he instructs them how to use a mobile aircraft firefighting training device during a training exercise at the Pearl Harbor Navy Region Hawaii Federal Fire Department in Oahu, Hawaii, on Feb. 15, 2008. Corbin is an instructor at the Center for Navy Engineering Learning Site. SHARE: Download: Full Size (0.1 MB) Credit: VIRIN: 955556-R-IAE08-293.jpg Photo Gallery