Logo of the U.S. defense company Raytheon is pictured at an international military fair in Kielce, Poland September 7, 2017. REUTERS/Kacper Pempel

WASHINGTON (Reuters) - Raytheon Co RTN.N has been awarded a $2.87 billion contract for services supporting the Army, combatant commanders and other Department of Defense customers for live, virtual and constructive training domains, the Pentagon said on Thursday.