INTEGRITY TEST U.S. Navy Petty Officer 3rd Class Tilford Breedlove, left, and Petty Officer 1st Class Joe Flores wear mask leak testers to check the integrity of their newly issued gas masks aboard the aircraft carrier USS Ronald Reagan while at homeport in San Diego, Calif., Dec. 8, 2010. Both Breedlove and Flores are aviation boatswain's mates. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 716986-R-SJP18-128.jpg Photo Gallery