The DOD can't even force companies to hand over data, such as schematics, if it wasn't in the original contract without providing extra payment negotiated with the contractor, and they can't force the contractor to set a particular price. This has happened on numerous systems. One of the biggest I'm aware of was the H-60 where the DOD ended up reverse engineering the early helicopters in order to maintain them, all because the DOD program office forgot to include a data rights clause in the contract (Sikorski didn't forget, they just didn't remind the DOD).