The BLU-82B/C-130 weapon system, known under program "Commando Vault" and nicknamed "Daisy Cutter" in Vietnam for its ability to flatten a section of forest into a helicopter landing zone, is an American 15000 pounds conventional bomb, delivered from either a C-130 or MC-130 transport aircraft or a CH-54 heavy-lift "SkyCrane" helicopter from the 1st Air Cavalry.