160913-N-XQ474-021 PHILIPPINE SEA (Sept. 13, 2016) Gunner's Mate 2nd Class Joshua Aguilar fires a Mk-38mm 25mm machine gun on board the Ticonderoga-class guided-missile cruiser USS Chancellorsville (CG 62) as part of a live fire exercise during Valiant Shield 2016. Valiant Shield is a biennial, U.S. only, field-training exercise with a focus on integration of joint training among U.S. forces. This is the sixth exercise in the Valiant Shield series that began in 2006. Chancellorsville is on patrol with Carrier Strike Group Five (CSG 5) in the Philippine Sea supporting security and stability in the Indo-Asia-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Andrew Schneider/Released)