160126-N-OI810-020 YOKOSUKA, Japan (Jan. 26, 2016) Hospital Corpsman 2nd Class Adalbert Guiterrez, from Palm Springs, Calif., sits in the personal gas chamber of an M46 joint services mask leakage detector to ensure his mask has a proper seal as he is fitted for chemical, biological and radiological personal protective equipment aboard the U.S. Navy's only forward-deployed aircraft carrier USS Ronald Reagan (CVN 76). Ronald Reagan provides a combat-ready force that protects and defends the collective maritime interests of the U.S. and its allies and partners in the Indo-Asia-Pacific region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Nathan Burke/Released)