Hernia Surgery Navy Cmdr. (Dr.) Matthew Bradley performs an umbilical hernia operation aboard the hospital ship USNS Comfort, Oct. 22, 2018. The Comfort participated in an 11-week medical support mission to Central and South America as part of U.S. Southern Command’s Enduring Promise initiative. SHARE IMAGE: Download Image: Full Size (4 MB) Tags: Southern Command, Navy, Humanitarian Aid Photo By: Navy Seaman J. Keith Wilson VIRIN: 181022-N-SG189-1041.JPG Photo Gallery