CBU-89 Gator

The GATOR mine system is an air-dropped anti-tank and anti-personnel mine system developed in the 1980s for compatibility with existing cluster dispensers. The system is utilized by the United States military.

The Air Force CBU-89/B configuration consists of an SUU-64 Tactical Munitions Dispenser, which can be equipped with an FZU-39 proximity sensor. When paired with the Wind Corrected Munitions Dispenser guidance tail kit, the system is designated as the CBU-104 precision-guided munition. An FMU-140/B fuze, utilizing either a doppler ranging radar or a time fuze, controls dispenser opening. Upon opening, vanadium pentoxide batteries activate to begin mine arming. The dispenser deploys BLU-91/B anti-tank mines and BLU-92/B anti-personnel mines.

The BLU-91/B anti-tank mine utilizes a magnetic sensor to detect targets, detonating when a target approaches, if the mine is moved, or if the battery voltage drops. It fires a clearing charge to remove debris before detonating its main RDX/Estane explosive charge, which creates an Explosively Formed Penetrator using the Misznay-Schardin effect to penetrate armored vehicles from below. The BLU-92/B anti-personnel mine deploys eight tripwires upon landing. It triggers via tension on these wires or through an anti-handling switch, detonating a Composition B-4 fragmentation charge. Both mine types are programmed to self-destruct at preset intervals of 4 hours, 15 hours, or 15 days, and become inactive after 40 days when the batteries fully discharge.

The system is used for rapid minefield emplacement by tactical aircraft to perform area denial, divert ground forces, or immobilize targets. During the 1991 Gulf War, the United States Air Force deployed CBU-89 units to disrupt the movement of Iraqi Scud missile launchers. Post-conflict reports indicated dud rates of 0.5% to 2% for the BLU-91 and 6% to 21% for the BLU-92, with some unexploded mines detonating without a triggering event, potentially due to desert heat. During the 2026 war in Iran, analysis indicated the probable deployment of BLU-91/B mines from a GATOR system near the Shiraz South Missile Base to restrict the movement of ballistic missile launchers.