It has been one of the federal government's top twenty-five contractors, and was acquired by an even larger government contractor, Computer Sciences Corporation (CSC), in 2003. At the time of acquisition, DynCorp had 26,000 employees and 95% of DynCorp's revenues came from U.S. government contracts.
Among the agencies it as worked with include the US Drug Enforcement Agency, Department of Justice, Environmental Protection Agency, Federal Communications Commission, Internal Revenue Service and Treasury Department.
DynCorp has had its share of controversy, as private military contractors such as Carlyle Group and Halliburton have had increasing roles in U.S. military operations overseas. This has led to the question of whether PMCs can be held to the same standards of accountability as members of the U.S. military.
In 1999, a Racketeer Influenced and Corrupt Organizations Act (RICO) lawsuit was filed against DynCorp employees stationed in Bosnia, which found, "employees and supervisors from DynCorp were engaging in perverse, illegal and inhumane behavior and were purchasing illegal weapons, women, forged passports and participating in other immoral acts."
On October 15, 2003, three DynCorp employees were killed in a terrorist bombing in the Gaza Strip. They were serving as security guards for American diplomats, supplementing the Diplomatic Security Service.