Navy doctors perform an open appendectomy aboard hospital ship.
PACIFIC OCEAN (April 27, 2011) Capt. Beth Jaklic, left, and Cmdr. Eric Gessler perform an open appendectomy on Electrician's Mate 3rd Class Mikhail Grigoryev aboard the Military Sealift Command hospital ship USNS Comfort (T-AH 20). Grigoryev was airlifted from the guided-missile frigate USS Gary (FFG 51) for the surgery. Comfort is the primary platform for Continuing Promise 2011, a five-month humanitarian assistance mission to the Caribbean, Central and South America. U.S. Navy photo by Mass Communication Specialist 2nd Class Eric C. Tretter/Released)