Proud Manta 2013 - Three MERLIN HM.1 Helicopters from 814 and 829 Naval Air Squadrons, with their  75 supporting air and ground crew, are to be the UK's input to 'Proud Manta' - the biggest anti-submarine exercise run by NATO – this year.     Ships, submarines and aircraft from fourteen nations will be converging on Sicily for the Two Week War Game, with the Fleet Air Arm detachment taking up residence at the US Naval Air Station Sigonella (close to Mount Etna).