160815-M-TM809-102 SOUTH CHINA SEA (Aug. 15, 2016) Lt. Cmdr. Frank Orsino, officer in charge, Helicopter Sea Combat (HSC) Squadron 21 detachment aboard hospital ship USNS Mercy (T-AH 19), conducts pre-flight checks of an MH-60S helicopter on the flight deck aboard Mercy. Mercy is en route to the final mission stop of Pacific Partnership 2016 in Padang, Indonesia. Upon arrival, partner nations will work side-by-side with local military and non-government organizations to conduct cooperative health engagements, community relation events, subject matter expert exchanges and a SAR exercise to better prepare for natural disaster or crisis. (U.S. Marine Corps photo by Sgt. Brittney Vella/Released)