FILE PHOTO: 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, Lockheed Martin Corp LMT.N and Northrop Grumman Corp NOC.N are each being awarded a multiple award U.S. defense contract worth a maximum $4.1 billion for ballistic missile defense, the Pentagon said on Tuesday.