( Editor’s Note: This story was updated on Jan. 26 to note that the IBCS-AFATDS event was part of a Project Convergence 21 communications exercise, not a live-fire event.) The Army last fall executed a potentially paradigm-changing technical demonstration, lashing up for the first time separate command-and-control systems that are today used for either missile defense or offensive missile strikes. In November, the Army used the Integrated Air and Missile Defense Battle Command System to attack a ground target using...