Veloz Prime was the main planet in the Veloz planetary system, inside the Demilitarized Zone and the former site of a Cardassian colony. In 2373, the Maquis, led by Michael Eddington, detonated three stratospheric torpedoes laden with cobalt diselenide in Veloz Prime's atmosphere. The nerve agent spread across the planet, forcing the Cardassians to evacuate. The Maquis settled the planet shortly after. (DS9: "For the Uniform")