Emergency crews muster for NI's largest sea rescue exercise
Northern Ireland's largest live sea rescue exercise has taken place on Belfast Lough.
The coastguard, fire service and RNLI lifeboat crews from six stations were involved in the dramatic air sea mock rescue.
Operation Diamond also involved crews from Scotland and the Republic of Ireland.
Helicopters, rescue boats and about 360 people were involved. The emergency training began at 09:30 BST on Sunday.
The mock situation was a rescue from a sinking passenger ferry with 50 passengers on board.