This was just too good to pass up.
Anyone care to guess? I'll save you a trip to google.
You're going to laugh when you read this, but it's ... Halliburton. Halliburton is sixth on the list of government contractors, with $6 billion in FY 2005 contracts, one-quarter of what Lockheed Martin received. Almost all of that came from Army contracts, and almost all of it ($5.4B) went to logistics support. They got 94.7% of their contracts in full and open competition in multibid scenarios, and another 4.7% of them from full and open competition where only the winning bid got submitted. Only 0.6% of their contracts came from any kind of restricted bid process, far away from the overall trend in federal contracting.
http://fedspending.org/http://www.captainsquartersblog.com/mt/archives/008283.php