F-16 Fighting Falcons demonstrate an ‘Elephant Walk’ as they taxi down the flightline at Kunsan Air Base, South Korea, Dec. 14, 2012. The Elephant Walk was a demonstration of U.S. and South Korean air force capabilities and strength. The F-16 Fighting Falcons are from the 35th and 80th Fighter Squadrons of the 8th Fighter Wing, Kunsan AB, South Korea; the 4th Fighter Squadron of the 388th Expeditionary Fighter Wing at Hill Air Force Base, Utah; and the 38th Fighter Group of the Republic of Korea air force. (U.S. Air Force photo/Staff Sgt. Jonathan Fowler)
Hat tip to the reader who pointed it out some time back.