Sailors prepare a litter during patient transportation training aboard the Military Sealift Command hospital ship USNS Mercy (T-AH 19) in preparation for Pacific Partnership 2018.

PACIFIC OCEAN (Mar. 14, 2018) Yeoman 2nd Class Amber Williams, left, from Chicago, Ill., and Personnel Specialist 2nd Class Mychael Keeler, from Hattiesburg, Miss., prepare a litter during patient transportation training aboard the Military Sealift Command hospital ship USNS Mercy (T-AH 19) in preparation for Pacific Partnership 2018 (PP18). PP18's mission is to work collectively with host and partner nations to enhance regional interoperability and disaster response capabilities, increase stability and security in the region, and foster new and enduring friendships across the Indo-Pacific Region. Pacific Partnership, now in its 13th iteration, is the largest annual multinational humanitarian assistance and disaster relief preparedness mission conducted in the Indo-Pacific. (U.S. Navy photo by Mass Communication Specialist Seaman Harley K. Sarmiento) File# 180314-N-NH199-0032