The final report of the Defense Science Board 2014 Summer Study on Strategic Surprise is attached. In accordance with its charter, the study reviewed how information about a potential adversary may lead to changing current Department priorities and what the possible actions and hedges against those changing priorities may be. The study considered what actions, if not taken by the Department, might lead to potential regrets in 2024. They study also reviewed possible actions and hedges against changing priorities. The study focused on potential regrets in eight areas and provides recommendations to avoid strategic surprise in those eight domains. The domains include: * Countering Nuclear Proliferation * Ballistic and Cruise Missile Defense * Space Security * Undersea Warfare * Cyber * Communications and Positioning, Navigation, and Timing (PNT) * Counterintelligence * Logistics Resilience To determine the potential regrets in 2024, the study focused on the likelihood of the regret occurring and the consequences if it does occur. In providing recommendations, the study focused on whether there are affordable and timely ideas to prevent the undesired outcome, and also whether the Department is already taking action toward this end.