http://defense-update.com/20120424_gmlrs-to-get-a-new-warhead.html#.U2LjicJOUdU GMLRS to Get a New Warhead] - Defense-Update.com, 24 April 2012 The AW warhead is a large airburst fragmentation warhead that explodes 30 feet over a target area to disperse penetrating projectiles.