The Army and Lockheed Martin are aiming by the end of this year to begin incorporating a multimode seeker into the Precision Strike Missile -- adding a sensor that will give the long-range weapon an option to attack ships as well as surface targets -- expanding the service's inventory of so-called multidomain weapons, a capability intended to complicate China's response in a potential conflict. The addition of a new seeker constitutes an upgrade of PrSM – which only last month...