The Mk 80 Mod 0 Encased Novel Explosive (SMAW-NE) rocket is effective against caves and bunkers. The SMAW-NE has a charge of PBXIH-135, an enhanced-blast warhead. The Indian Head Naval Surface Warfare Center teamed with Marine Corps Systems Command and Talley Defense Systems to respond to an urgent U.S. Marine Corps need for a shoulder-launched enhanced-blast warhead in 2003. It was used in combat during both the First and Second offensives in Fallujah, in 2004.