170502-F-OH871-0163 HURLBURT FIELD, Fla. (May 2, 2017) SEAL team members conduct proof of concept development testing with an in-water reconnaissance drone during exercise TRIDENT 17 on Hurlburt Field, Fla. TRIDENT 17 is naval special warfare's premiere joint training event that encompasses several special operations forces and conventional military participants, as well as partner nations and partner agencies to create realistic, combined-effort scenarios for operational units. (U.S. Air Force photo by Tech. Sgt. Gregory Brook/Released)