M441 Hornet Remote Explosive System

HORNET Mines are a type of ordinance used by the UNSC. HORNET Mines are nuclear devices capable of considerable stealth and are kept aboard some UNSC Prowlers, such as the Dusk.

These mines played an invaluable role in The Battle of Onyx, as the Dusk was able to lay a field of HORNET mines to destroy 12 Covenant starships and wound four others, buying the Battlegroup Stalingrad valuable extra time before it was destroyed when Covenant reinforcements arrived.

It doesn't have anything to do with the UNSC's Vehicle.