Two helicopters crashed midair in southern New Jersey on Sunday, leaving one person dead and injuring another, officials said. The aircraft, an Enstrom F-28A and an Enstrom 280C helicopter, "collided in mid-air" at about 11:25 a.m. near Hammonton Municipal Airport, the Federal Aviation Administration said. Only the pilots were on board the helicopters when they collided, according to the statement.