The Long Range Standoff cruise missile is a long-range survivable standoff weapon capable of delivering lethal nuclear effects on strategic targets. LRSO will replace the currently fielded Air Launched Cruise Missile and will be integrated on both legacy and future bomber aircraft. The LRSO weapon system will be capable of penetrating and surviving advanced Integrated Air Defense Systems to prosecute strategic targets in support of the Air Force's global attack capability and strategic deterrence core function.

LRSO entered the engineering and manufacturing development phase July 1, 2021, after a four-year technology maturation and risk-reduction phase. The program is currently executing the developmental test series. Current technical performance measures, engineering analyses and test results indicate LRSO is meeting all requirements.

LRSO's design will use modular open-system architecture, which allows weapon programs to better respond to changing threats by allowing them to replace components more easily. 

The program is executing on schedule to meet its Air Force Global Strike Command-mandated fielding requirement.