Gen. (ret) Larry D. Welch led a Defense Science Board Permanent Task Force on nuclear weapons surety as part of an Air Force nuclear enterprise review Tuesday and Wednesday. Gen. Welsh is seen giving a briefing to the 90th Operations Group leadership in the pre-departure briefing room in Bldg. 1292. Other members of the DSB task force are Dr. James Tegnelia, Vice Adm. (ret) G. Robert Nanos, Jr., Dr. Robert Seldon, David McDarby, Brenda Poole and Maj. Christopher Cruise. (U.S. Air Force photo by Jeff Allred)