Army leaders have determined -- five decades after launching the Abrams program and following five years of closely held analysis -- that the time has come for a clean-sheet tank design to invent a new combat vehicle optimized for machine-speed warfare, armed not only with a big gun but artificial intelligence, new components to significantly reduce weight and more. The Army has announced a plan to develop by 2030 a newly designed M1A3 Abrams tank that aims to take advantage...