Norfolk US helicopter crash: Debris covers "size of a football field"
8 January 2014 Last updated at 09:50 GMT
Investigations have started into what caused a US Air Force helicopter to crash in Norfolk, killing all four people on board.
The HH-60G Pave Hawk, based at RAF Lakenheath in Suffolk, came down at a nature reserve in Cley next the Sea on Tuesday night.
The aircraft, assigned to the 48th Fighter Wing, was on a low-level training mission.
Debris from the crash "on difficult terrain in the marsh" is spread over an area "about the size of a football field", said Norfolk Police.