A Green Beret assigned to the 7th Special Forces Group (Airborne) clears along the wall of a building after conducting an underwater infiltration of Okaloosa Island on April 2. Special Forces soldiers from the group attacked a mock enemy outpost on the island to rescue a hostage after infiltrating by water. Special Forces Operational Detachment Alphas (ODAs) specialize in a wide variety of infiltration methods to include air, maritime, mobility, and mountain insertion.