Hughes Aircraft Company and Hughes Aircraft Mississippi, subsidiaries of Raytheon, paid $500,000 to settle allegations that they defrauded the government by not properly testing certain components of torpedoes and using non-conforming fasteners under several Department of Defense contracts in violation of the False Claims Act. An investigation by the Defense Criminal Investigative Service and the Naval Criminal Investigative Service found that Hughes failed to properly test certain electronic components of Advanced Capacity Mark 48 torpedoes sold to the United States Navy. It also found that Hughes used flawed fasteners such as stainless steel screws that failed to meet specifications contained in several other contracts.