There's a certain amount of defense disciplining that was already planned to go into effect. The Pentagon has been downsizing contracts and bringing things in house in a slow process over the last few years. Some things were planned in advance and the sequestration is just being used as cover.
Going for the blunderbuss | The Sheathed Sword
"The industry figured out two years ago that the defense budget was going down. They have been consolidating capacity, shrinking the workforce, bringing subcontracted business in house, selling assets for two years. Only this year are these long-term, sensible decisions being blamed on sequester; they were already happening and will continue to happen, with or without sequester."