The U.S. Air Force has awarded Raytheon a $26 million contract modification to supply Taiwan with upgraded missile warning radar centers.

The U.S. Department of Defense says the contract is comprised of 100 percent foreign sales to the government of Taiwan. Work is scheduled to be performed at Woburn, Mass.

Under the contract, Raytheon will upgrade Taiwan's Early Warning Radar Surveillance Radar Program Missile Warning Center to address obsolescence concerns.

The technology is designed to warn operators of incoming ballistic missile attacks, as well as track threats, and provide accurate determination of threat versus non-threat objects.

The U.S. government expects work to be complete by May 28, 2018.