Eight people who were on board a United States Air Force B-52 Stratofortress are believed to be dead after the plane crashed shortly after takeoff at Edwards Air Force Base Tuesday morning. Emergency crews responded to the scene and are working to account for all personnel, officials said. Edwards Air Force Base wrote in a news release that “initial indications are that the crash was not survivable.” Aerial footage taken shortly after the crash showed a large smoldering burn mark on the land. The aircraft was on a routine test mission at Edwards airfield, located in the western Mojave Desert, about 100 miles northeast of Los Angeles. It went down at about 11:20 a.m. local time. The airfield is closed and all inbound aircraft are being diverted, base officials said in an earlier statement.