The U.S. Navy has big plans for modernizing existing major end items. The maritime branch is excited about the next-generation DDG(X) destroyer and the F/A-XX next-generation fighter jet. Now, the SSN(X) futuristic submarine that will replace the Virginia-class boats is experiencing delays. The SSN(X) may not come to fruition until the early 2040s, which is hard to fathom. Who knows what the U.S. military will look like in two decades?