

US Navy SEAL members train during 'Hell Week' at the Naval Amphibious Base as part of the Special Operations department. Here they work as a team to throw a log into the air, on May 10, 2004, in Coronado, Ca.
In this undated file photo, US Navy SEALs are shown during special operations training at camp AP Hill in Virginia.
In this photo released by the US Navy Members of the Sea, Air, Land Delivery Vehicle Team 1, US Air Force Brig. Gen. Gregory L. Trebon, Commander of Special Operations Command Pacific, conducts a free-fall parachute training jump from a US Army UH-60L Black Hawk helicopter. Photographer's Mate 1st Class Keith W. DeVinney/U.S. Navy/AP/File
This undated US Navy image obtained on Sept. 26, 2001 from the US Department of Defense shows US Navy SEAL members hanging from a Special Patrol Insertion/Extraction (SPIE) rope secured to a Helicopter Combat Support Squadron 6 CH-46D Sea Knight helicopter during a training mission. US Navy/AFP/Newscom/File
The US Navy SEALs show off what they do best during a public demonstration, in Newport Beach, Calif., in this June 1, 1999 file photo. Ron Brazil/ZUMA Press/Newscom/File
US Navy SEALs practice with guns in chest deep water, in this Jan. 1, 1991 file photo. Bill Gentile/ZUMA Press/Newscom/File
US Navy SEALs Team, Special Operations Forces train at the USN Amphibious base, in Coronado, Calif., in this June 01, 2000 file photo. Gary Kieffer/ZUMA Press/Newscom/File
In this May 20, 1991 file photo, US Navy Seals spend a lot of time in the water as part of their intense military training. Bill Gentile/ZUMA Press/Newscom/File
Members of SEAL Team Two (Echo Platoon) conduct room search and clearing operations during a practice ship boarding and take-down aboard the USS Normandy in this July 21, 2001 file photo. US NAVY/AFP/Newscom/File
US Navy SEAL members train during 'Hell Week' at the USN Amphibious base as part of the Special Operations department. Here they are shown in supine position in the surf fully clothed on May 10, 2004, in Coronado, Calif. Gary Kieffer/ZUMA Press/Newscom/File
In this June 01, 2000 file photo, US Navy Seals Team, Special Operations Forces are seen training at the USN Amphibious base, in Coronado, Calif. Gary Kieffer/ZUMA Press/Newscom/File
In this May 1, 2000 file photo, a member of the US Navy SEALs Team, Special Operations Forces is seen training at the USN Amphibious base, Coronado, Calif. Gary Kieffer/ZUMA Press/Newscom/File
In this Dec. 11, 2010 file photo, a member of the US Navy SEALs parachutes into Lincoln Financial Field before the start of the game Between Navy and Army in Philadelphia. Navy set the tone early in the game as Navy defeats Army 34-31 in front of 80,117 fans. Newscom/File