General Atomics Electromagnetic Systems received a three-year, $134 million contract from the Pentagon’s Missile Defense Agency to develop, integrate and perform flight tests of an advanced sensor that will fly aboard an MQ-9 unmanned aircraft. Work will be based in San Diego.

The deal, made public Aug. 20, calls for the contractor to test the sensor in realistic test scenarios at locations both inside and outside the continental United States.

The sensor will fly on an MQ-9, also known as a Reaper, built by General Atomics Aeronautical Systems Inc.

The Missile Defense Agency, based in Albuquerque, New Mexico, awarded the deal.