The U.S. government was liable only for damage to Sea-Land’s trucks and equipment caused by enemy fire. It did not furnish men or material to help Sea-Land get its operations up and running. In a place where replacement parts could not simply be ordered from a nearby distributor, the chance that something would go wrong, blowing budgets and cost calculations, was very high. McLean was running a commercial operation in a war zone, and betting that he could control costs well enough to make a profit from his fixed-price bid.