Military.com:
The U.S. Army continues to invest in upgrades to its Cold-War era Patriot missile system in the proposed fiscal 2019 budget, requesting about $1.6 billion in upgrades to increase its range and lethality.
Since it was fielded in the mid-1980s, the Phased Array Tracking to Intercept of Target, or Patriot, system has been the Army’s air-defense workhorse, designed to counter tactical ballistic missiles, cruise missiles, and advanced aircraft.
The latest improvement to the Patriot is the Missile Segment Enhancement, an upgrade to Raytheon’s Patriot Advanced Capability 3, or PAC 3, missile.
