The branch will receive MQ-9 Reaper spare parts and ground support equipment under the firm-fixed-price contract.
Work will occur in San Diego and the Pentagon expects delivery to finish by March 13, 2015.
Wright-Patterson Air Force Base in Ohio is the contracting activity.
The company also holds an estimated $410.9 million contract to provide Gray Eagle UAVs, initial spare parts and hardware to the U.S. Army.