Commander Joel Holwitt, U.S. Navy, is the capability development department head at the Undersea Warfighting Development Center Tactical Analysis Group. He is an active-duty submarine officer who has served in four fast-attack nuclear submarines. A 2003 graduate of the U.S. Naval Academy, he earned a Ph.D. in history from Ohio State University. He is the author of "Execute Against Japan": The U.S. Decision to Conduct Unrestricted Submarine Warfare (Texas A&M University Press, 2009).