Lockheed said it is contracted to provide four AEHF satellites and the mission control segment as the prime contractor for the AEHF constellation.
The satellite will launch aboard an Atlas V vehicle at Cape Canaveral Air Force Station.
The AEHF system is the successor to the five-satellite Milstar constellation that is currently in orbit.
The AEHF system transmits military communications including video, maps and data.
Northrop Grumman is subcontracted as the payload provider for the AEHF program.