B21 was firm fixed price contract, so contractor has a lot more leeway on their side, but it turns out they didn't expect the massive inflation of the past few

B21 was firm fixed price contract, so contractor has a lot more leeway on their side, but it turns out they didn't expect the massive inflation of the past few years and that has blown their cost models out of the water. They will lose a lot of money on the first 5 small batches.