Boeing landed a $1.6 billion contract for Air Force missile work, the company announced Thursday, and the mission will be supported in Alabama.

Contract work will be performed primarily in Utah and Ohio but the project will be supported at Boeing’s office in Huntsville, Boeing said.

Related: Watch video of nuclear missile test with ties to Huntsville

Boeing has been selected as the prime contractor for the nation’s intercontinental ballistic missile (ICBM) guidance subsystems support. The contract calls for guidance subsystem support for the Minuteman III ICBM. The Contract work will continue for 16 years.

According to the announcement, Boeing will maintain the around-the-clock readiness and accuracy of Minuteman ICBM guidance systems — which have logged more than 40 million hours of continuous operation — to ensure safe, secure and effective strategic deterrence until 2039.

“We built the Minuteman’s guidance system, so no one knows it like Boeing,” Ted Kerzie, program director of Strategic Deterrence Systems, said in the announcement. “Our highly-specialized facilities and top-flight engineers enable us to sustain it with unmatched quality and precision. We look forward to continuing our partnership with the Air Force on this all-important mission.”

Boeing said its ICBM weapon system has served as the backbone of the U.S. nuclear triad since the inception of strategic deterrence. Boeing is the only company that has continuously supported every ICBM subsystem — guidance, ground, propulsion and re-entry — over the lifetime of the system.