170602-N-UD469-059 PUGET SOUND, Wash. (June 02, 2017) The Ohio-class ballistic-missile submarine USS Nebraska (SSBN 739) blows the forward ballast tank during sea trials. Nebraska departed Puget Sound Naval Shipyard and Intermediate Maintenance Facility after completing an extended major maintenance period, to include an engineered refueling overhaul. (U.S. Navy photo by Mass Communication Specialist 1st Class Amanda R. Gray/Released)