Lt. Gen. John N.T. “Jack” Shanahan is the Director for Defense Intelligence (Warfighter Support) (DDI (WS)), Office of the Under Secretary of Defense for Intelligence, Pentagon, Washington, D.C. The DDI (WS) ensures combatant commands (CCMD) have the intelligence policy, processes and resources they need to plan and conduct successful operations and campaigns.
General Shanahan previously served as the Commander, 25th Air Force, Joint Base San Antonio-Lackland, Texas. In his position as 25th Air Force Commander, General Shanahan also served as the Commander of the Service Cryptologic Component. In this capacity he was responsible to the Director, National Security Agency, and Chief, Central Security Service, as the Air Force's sole authority for matters involving the conduct of cryptologic activities, including the spectrum of missions directly related to both tactical warfighting and national-level operations.
General Shanahan is a master navigator with more than 2,800 flying hours in the F-4D/E/G, F-15E and RC-135. He is authorized to wear the master intelligence occupational badge.