A top Air Force commander, Gen. Thomas Bussiere, announced his retirement Tuesday for “personal and family reasons.” “After much reflection and with a full heart, Barb and I have made a difficult decision to request retirement from the United States Air Force for personal and family reasons,” Bussiere, the head of Air Force Global Strike Command, said in a post on Facebook. “While I’m stepping away from active duty, my commitment to service remains. I look forward to finding new ways to support our Air Force, our national defense and the incredible people who make it all possible,” wrote Bussiere,...