Olympics: '20,000 military personnel could be needed'

• Telegraph: London 2012 Olympics: Games could need more troops, Lord Coe suggests

How the 17,000 was made up:

A total of 17,000 servicemen and women will ... be involved in the Olympics, including 11,800 soldiers, 2,600 sailors and marines, and 2,600 airmen.

Some 11,000 of these will be involved in the security of more than 30 sporting venues and some 70 non-competition venues, including car parks and hotels, while others will carry out specialist support roles including air security, search teams, communications and logistics.

Overall, a 23,700-strong security force for the Games will include a mix of military, private security guards and at least 3,000 unpaid London 2012 volunteers.

•  MailOnline source: The £50m security blunder! G4S admit to Olympic failing over staffing shortfall