Boeing is the second largest defense contractor - Lockheed Martin is the largest. If the Northrop Grumman / TRW deal ever goes through, they will become number one.

Thanks. I worked for Lockheed Martin a while back, and was going to correct this error, but I wasn't sure if Boeing had somehow passed Lockheed in the 5 years since then. Though since Lockheed got the JSF contract, that would be rather surprising.