Aviation officials are investigating after a helicopter crashed during the Bloomsburg Fair over the weekend. WNEP-TV is reporting that both the National Transportation Safety Board and the Federal Aviation Administration are working to determine why the sightseeing aircraft fell from the air into a parking lot south of the event's helipad on Saturday night. Three occupants of the copter were hospitalized, but there weren't any deaths. Several cars parked in the lot were also damaged during the crash.