 SAN DIEGO, March 04, 2021 GLOBE NEWSWIRE -- Kratos Defense Security Solutions, Inc. Nasdaq: KTOS, a leading National Security Solutions provider, announced today that it has received an 8.9 million subcontract to upgrade four Kratos CH-47F Chinook Avionics Trainers CATs and two Kratos CH-47F Maintenance Blended Reconfigurable Aviation Trainers MBRATs located at the U.S. Armys 128th Aviation Brigade in Ft. Eustis, Virginia. 