The U.S. Missile Defense Agency (MDA) has awarded three support contracts worth as much as $270 million apiece to ALATEC Inc., Computer Sciences Corp. and Tetra Tech-EMC, the Pentagon announced June 17.

The three companies will provide advisory services related to U.S. ballistic missile defense systems for the MDA’s Chief of Staff Directorate, the press release said. The indefinite-delivery, indefinite-quantity contracts allow the agency to issue individual task orders to any of the companies over the next five years.