One person has died and another suffered critical injuries after two helicopters collided mid-air on Sunday above a city in New Jersey, local police said. The Hammonton Police Department reported that one of the helicopters was engulfed in flames by the time it crash landed on the ground, and emergency services were working to extinguish the fire. Only the pilots were on board each aircraft, the Federal Aviation Administration (FAA) said in a statement, adding there would be a federal investigation into what led to the collision.
