A warhead includes a gas containing canister having a front end onto which is screwed a valve assembly having an interior which is in gas communication with the canister. A structure-penetrating nose connected onto the valve assembly. Positioned around a periphery of the valve assembly is a plurality of hollow frangible plugs. The nose includes a shoulder portion that shears the plugs upon impact with a target thus allowing gas within the canister and valve assembly to escape to an atmosphere.

 
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