The AGM-181 Long Range Stand Off Weapon (LRSO) is a nuclear-armed air-launched cruise missile under development by Raytheon Technologies that will replace the AGM-86 ALCM.
As of August 24, 2017, Raytheon and Lockheed Martin received separate $900 million contracts from the Department of Defense and US Air Force and are developing their own versions.
[10] The delay was caused by financial pressures and an uncertain acquisition plan, and allowed by the long remaining service life left for the AGM-86 and lack of urgent necessity compared to other defense needs.
[12] The FY2020 defense authorization bill passed by Congress repealed the requirement for a conventional warhead version of the LRSO, leaving only the nuclear armed variant.
[13] In April 2020, the Air Force announced plans to continue the Long-Range Standoff Weapon’s development with Raytheon Company as a sole-source contractor.