Troops brought in for London Olympics security after personnel shortage

London (CNN) - British government ministers fought back Sunday against accusations they had taken their eye off the Olympic security ball, rejecting accusations they were warned nearly a year ago about the security giant contracted to provide guards for the Games.

G4S, the security contractor, admitted on Wednesday that it would not be able to provide more than 10,000 security staffers by the time the Olympics begin in less than two weeks.

The government hurriedly announced it would bring in 3,500 military personnel to boost security for the Games.

Sports Secretary Jeremy Hunt said Sunday it should be no surprise that some contractors were unable to meet their commitments. "It's completely normal that you're going to find some contractors on a project of this size who aren't going to be able to deliver what they promised," he said on the BBC's Andrew Marr show.

On "Early Start" this morning, CNN reporter Dan Rivers explains the security concerns despite the government downplaying the shortage.

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