Deputy Defense Secretary Bob Work, center, testifies on implementing the Defense Department's cyber strategy with Navy Adm. Michael S. Rogers, left, commander of U.S. Cyber Command and director of the National Security Agency, and Terry Halvorsen, the department's acting chief information officer, before the House Armed Services Committee in Washington, D.C., Sept. 30, 2015. DoD photo by U.S. Army Sgt. 1st Class Clydell Kinchen