NEW : The new agreement means more troops will guard the Olympics . The government was already sending more military personnel to cover shortfalls . Security : G4S has said it ca n't supply the number of guards it promised . British lawmakers forced the G4S chief to concede security was a ` ` shambles ''
NEW : The new deployment means 18,200 troops will guard the Olympics . The government was already deploying 3,500 military personnel to cover shortfalls . Security contractor G4S has said it ca n't supply the number of guards it promised . British lawmakers forced the G4S chief to concede security was a `` shambles ''