The U.S. Navy fleet ocean tug USNS Sioux (T-ATF 171) tows the Royal Canadian Navy auxiliary oil replenishment ship HMCS Protecteur (AOR 509) to Joint Base Pearl Harbor-Hickam. HMCS Protecteur experienced an engine fire en route to Canada and returned to Pearl Harbor with the assistance of U.S. Navy ships. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Barker/Released)