Besides the usual panoply of search-and-rescue aircraft deployed by America's Civil Air Patrol, which wound down its search on September 17th, a different sort of search effort is being conducted online, using satellite photographs.

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William is a search and rescue pilot for the Royal Air Force and must decide soon if he wants to stay on in the service for another three years.

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CNN's Gary Tuchman, accompanying airmen aboard an Air Force HC-130 search-and-rescue and refueling plane flying over Iraq, filed this report.

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Prince William works as a search and rescue pilot for Britain's Royal Air Force, where he is a flight lieutenant.

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Air Force officials credit their Combat Search and Rescue teams with more than 750 saves in Iraq and Afghanistan since September 11, 2001.

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Officers were assisted by the Swaledale Mountain Rescue Team, North Yorkshire Fire and Rescue Service and an RAF air support unit in their search of the water.

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Despite an extensive search involving a Royal Air Force rescue helicopter, five RNLI lifeboats, other vessels and a police helicopter, Mr Robertson was not found.

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New York's Air National Guard unit on Long Island has some snowmobiles it can deploy to help with search and rescue or emergency transportation.

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Coastguard rescue helicopters from Portland and La Hague, lifeboats from Weymouth and Alderney, Channel Islands Air Search and the French Coastguard were all involved in the search.

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