Mike Callaway (from left), signals intelligence engineer; Earl Sifford, senior business developer; John Miller, AFPEO and director, Agile Combat Support; Lt. Col. Lea Kirkwood, Automatic Test Systems Division chief; and Col. Michael Kelly, Electronic Warfare and Avionics Division chief, discuss the Joint Service Electronic Combat Systems Tester. (U.S. Air Force photo/Tommie Horton)