Col. William Krueger (center), 225th Air Defense Group commander, shows Gen. Terrence O'Shaughnessy, NORAD and USNORTHCOM commander, the technology the Western Air Defense Sector was using during the 9/11 attacks. O'Shaughnessy met with the WADS operations crew that provided command and control of the 142nd Fighter Wing's F-15 intercept of the Aug. 10 stolen Horizon Bombardier Q400 aircraft out of SeaTac International Airport. (U.S. Air National Guard photo by Maj. Kimberly D. Burke)