The Air National Guard today received permission to call up as many as 13,000 personnel to perform homeland security and civil support missions as part of larger activation of up to 50,000 reservists. The authorized Air Force call-ups will include pilots and support personnel needed to perform combat air patrols of indeterminate duration and scope over U.S. cities, senior officials said. These air patrol missions were instituted in the aftermath of the deadliest terrorist attack upon American soil Tuesday. The...