Adrian Diaz, left, a member from the University of San Diego Pre-Dental Society, cuts the stitching line as U.S. Navy Cmdr. (Dr.) Matthew T. Provencher, center, concludes the surgery of removing an extra thumb from a Vietnamese patient aboard the Military Sealift Command hospital ship USNS Mercy during a visit to Quy Nhon, Vietnam, supporting Pacific Partnership 2010, June 5, 2010. Adrian Diaz, left, a member from the University of San Diego Pre-Dental Society, cuts the stitching line as U.S. Navy Cmdr. (Dr.) Matthew T. Provencher, center, concludes the surgery of removing an extra thumb from a Vietnamese patient aboard the Military Sealift Command hospital ship USNS Mercy during a visit to Quy Nhon, Vietnam, supporting Pacific Partnership 2010, June 5, 2010. SHARE: Download: Full Size (2.22 MB) Tags: Photo Essays Credit: VIRIN: 525097-R-DKX68-832.jpg Photo Gallery