The AGM-154 Joint Standoff Weapon (JSOW) precision strike weapon that can carry several different lethal packages. The weapon’s standoff range allows the JSOW to remain outside the threat envelopes of enemy point defenses while effectively engaging and destroying targets.
The AGM-154A is the baseline version of the JSOW system. It uses flip-out wings and four cruciform (plus two small horizontal) tailfins for flight control. This variant uses a cluster bomb dispenser for use against soft targets.
The AGM-154B carried 6 BLU-108/B SFM (Sensor Fuzed Munition) dispensers, each of which could release four "Skeet" terminally guided anti-tank submunitions. It was a joint U.S. Air Force and Navy project, but the Air Force pulled out because it selected the CBU-115/B WCMD-ER (Wind-Corrected Munitions Dispenser - Extended Range) as its future standoff anti-armor weapon. As the Navy couldn't afford to fund the AGM-154B on its own, this version had been cancelled.
The AGM-154C, developed for the U.S. Navy only, uses a "BROACH" multi-stage blast fragmentation/penetrator warhead. It also features an IIR seeker and ATA (Automatic Target Acquisition) technology. The ATA feature allows the missile to find the target without intervention of an operator, because the internal logic compares the IIR seeker's image with preset reference images. ATA made it possible to drop the two-way data link which was originally planned for the AGM-154C.
The AGM-154C-1, originally known as AGM-154C Block III, features improved seeker algorithms which enable it to hit a moving target, and also adds a dual-mode (UHF/Link-16) datalink for inflight targeting updates from the launching aircraft.