A 628th Security Forces Squadron patrol boat speeds through the water Feb. 11, 2015, at Dock Charlie on Joint Base Charleston – Weapons Station, S.C. Night or day, rain or shine, the Defenders patrol the miles of shoreline at the Weapons Station. (U.S. Air Force photo/Airman 1st Class Clayton Cupit)

Master at Arms 2nd Class Michael Harkey, 628th Security Force Squadron level two coxswain, listens for orders Feb. 11, 2015, at Dock Charlie on Joint Base Charleston – Weapons Station, S.C. The night operation demonstrated the Defenders’ insertion and extraction capabilities, while increasing teamwork and camaraderie. (U.S. Air Force photo/Airman 1st Class Clayton Cupit)

Two 628th Security Forces Squadron patrol boats drive in formation Feb. 11, 2015, at dock Charlie on Joint Base Charleston – Weapons Station, S.C. The night operation demonstrated the Defenders’ insertion and extraction capabilities, while increasing teamwork and camaraderie. (U.S. Air Force photo/Airman 1st Class Clayton Cupit)

A 628th Security Forces Squadron patrol boat sits idle Feb. 11, 2015, at Dock Charlie on Joint Base Charleston – Weapons Station, S.C. The Defenders patrol miles of shoreline using their high-speed, high-maneuverability boats, both day and night. (U.S. Air Force photo/Airman 1st Class Clayton Cupit)

Master at Arms 2nd Class Michael Harkey, 628th Security Force Squadron level two coxswain, docks a patrol boat Feb. 11, 2015, at Dock Charlie on Joint Base Charleston – Weapons Station, S.C. The night operation demonstrated the Defenders’ insertion and extraction capabilities, while increasing teamwork and camaraderie. (U.S. Air Force photo/Airman 1st Class Clayton Cupit)