Saildrone Explorer A Saildrone Explorer unmanned surface vessel sails in the Gulf of Aqaba off Jordan's coast, Dec. 12, during exercise Digital Horizon. U.S. Naval Forces Central Command began operationally testing the vessel as part of an initiative to integrate new unmanned systems and artificial intelligence into U.S. 5th Fleet operations. SHARE: Download: Full Size (4.2 MB) Credit: Army Cpl. DeAndre Dawkins VIRIN: 211212-A-AI379-0450C.JPG Photo Gallery