"The ATACMS is an all-weather, inertially-guided surface-to-surface missile first used in the 1990s that can intercept high-value targets up to 300 kilometers (186 miles) away."
The MGM-140 Army Tactical Missile System (ATACMS) is a tactical ballistic missile manufactured by the US defense company Lockheed Martin.
In March 1986, Ling-Temco-Vought won the contract for the missile design. The system was assigned the MGM-140 designation. The first test launch came two years later, thanks to earlier experience of the company with previous programs.
The first use of the ATACMS in combat was during Operation Desert Storm in 1991
In 2007, the U.S. Army terminated the ATACMS program due to cost, ending the ability to replenish stocks. To sustain the remaining inventory, the ATACMS Service Life Extension Program (SLEP) was launched, which refurbishes or replaces propulsion and navigation systems, replaces cluster munition warheads with the unitary blast fragmentation warhead, and adds a proximity fuze option to obtain area effects. Deliveries were projected to start in 2018. The ATACMS SLEP is a bridging initiative to provide time to complete analysis and development of a successor capability to the aging ATACMS stockpile, which could be ready around 2022.