No problem
Start putting in the contracts that repairs must be completed within 5 days of notification of the repair need, or within 6 days of the first attempt to notify, or the contractor starts paying penalties. Does not matter how large or how small the job is. Penalty is 10 percent of the purchase price for the equipment per day, minimum 10,000 per day. Or, the contractor has the option of putting it in the contract allowing the military to make its own repairs.