Lockheed Martin Mission Systems and Training is to provide engineering services and support for the U.S. Navy's Integrated Submarine Imaging Systems, or ISIS, program.

The work commissioned by the U.S. Naval Sea Systems Command in Washington, D.C., is the exercise of an earlier contract option and is worth more than $126.29 million, the Defense Department reported.

The ISIS program provides mission critical, all-weather, visual and electronic search, digital image management, indication, warning, and platform architecture interface capabilities for Los Angeles-class; Seawolf-class; Ohio-class; and Virginia-class submarines.

It rolls up existing components and near term capabilities and allows insertion future capabilities.

Company services will include design, development, testing, reverse engineering, technology insertion/refreshment, engineering services, field engineering services, and system support, the Defense Department said.

Most of the work will be conducted at the company facility in Manassas, Va., and is expected to be completed by September 2017.