Gen. David Patraeus and Gen. Duncan McNabb greet Secretary Gates at Scott Air Force Base. Commander of U.S. Central Command Gen. David Patraeus (left), U.S. Army, and Commander of U.S. Transportation Command Gen. Duncan McNabb, U.S. Air Force, greet Secretary of Defense Robert M. Gates (right) at Scott Air Force Base, Ill., on April 1, 2010. Gates presented the U.S. Transportation Command with the Joint Meritorious Unit Award. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 933560-T-RRW31-788.jpg Photo Gallery