Welding
U.S. Air Force Capt. Fallon, from the Maryland Air National Guard , 175th Civil Engineer Squadron, views her next weld, welding together pieces of railroad track as a temporary vehicle barrier along the Southwestern border of Ariz.. in support of Operation Jump Start, Sonoita, Ariz. Feb 07, 2008 (U.S. Air Force photo by Senior Master Sgt. Jim Foard) (released), Official Photo By: SMSgt Jim Foard, 175th Public Affairs, WARFIELD AIR NATIONAL GUARD BASE, Maryland