"Also joining the President on the trip will be one military officer carrying a suitcase containing America’s nuclear missile launch codes, plus representatives of six departments of state.
Mr Obama himself will fly on Air Force One, which doubles as a flying luxury hotel and command post complete with an operating theatre and gym.
The customised Boeing 747-200B, which is accompanied by a decoy aircraft, is said to cost around £110,000 an hour to run. The President and his wife, who are visiting Ireland today, will arrive at Stansted Airport tomorrow to be greeted by Prince Charles and Duchess of Cornwall."