Adm. Christopher W. Grady, commander, U.S. Fleet Forces Command, left, Vice Adm. Daryl Caudle, center, and Vice Adm. William Houston, right, stand at attention during the Commander, Submarine Forces change of command ceremony in Norfolk, Va., Sept. 10, 2021. During the ceremony, Houston relieved Caudle as Commander, Submarine Forces/Submarine Force Atlantic/Allied Submarine Command. (U.S. Navy Photo by Mass Communication Specialist 1st Class Cameron Stoner)