WASHINGTON, July 27 (UPI) -- A group of trial lawyers Tuesday filed a lawsuit against two U.S. defense contractors on behalf of five Iraqis who were detained at the notorious Abu Ghraib prison near Baghdad. The suit alleges that four of the Iraqis were "unlawfully tortured by agents or employees" of the two companies working at the jail. The fifth plaintiff is the widow of an Iraqi who is said to have died after maltreatment at their hands. The two companies -- Arlington, Va.-based CACI Inc. and San Diego-based Titan Inc. -- vigorously deny the charges. A statement from CACI...