An aircraft store (a thin-walled canister) containing and dispersing submunitions, which can be (anti-personnel or anti-tank) mines, penetration (runway cratering) bomblets, fragmentation bomblets etc.; a burster charge splits open the canister after release to disperse the bomblets over a wide area; some submunitions are fitted with delay or pressure fuzes, to act as mines (called "minelets"); the CBU itself however should not be confused with a fragmentation bomb.