U.S. Air Force MAJ. Steve Walker (extreme right), an HH-60 Pavehawk helicopter pilot from the 33rd Rescue Squadron, Kadena Air Base, Japan, discusses relief operation procedures with Sri Lankan Air Force Flight LT's Nipuna Thanippuliarachchi (far left) and Deshepriya Silva, at Katunayake Air Force Base, Sri Lanka, on Jan. 11, 2005. More than 18,000 U.S. military personnel are providing humanitarian assistance in Southwest Asia after a 9.0 magnitude earthquake on Dec. 26, 2004, triggered devastating tsunamis that killed over 250,000 people in the region. (USAF PHOTO by MASTER SGT. Val Gempis) (Released)