Since 2003 till date many US companies shown tremendious growth in their bussiness , who are engagaed in war material productins/ supply.
Boeing grows 438 percent in last 5 years.It is not easy for hugh company like Boeing to mainatin itself and show 400 percent growth.
Please read on this subject on net. You will found lot of material which indicates how US companies made money and how it helped US to come out from 2002 slow down.
Best is , Read Arindam Chaudhary's article in todays news papaer. (Tile is something like ..Bush Cow Boy )