Bunker Buster

Maybe Iran should be a bit nervous:

Boeing's Phantom Works is leading the effort to demonstrate the Massive Ordnance Penetrator (MOP). The three-phase technology demonstration builds on design studies that Boeing had conducted for the laboratory. Flight testing is envisaged around 2006. The 6 m [20 feet] long MOP features short-span wings and trellis-type tails. The 13,600 kg [30,000 lb] weapon contains a 2,700 kg [6,000 lb] explosive charge. MOP is designed to go deeper than any nuclear bunker buster and take out 25 percent of the underground and deeply buried targets. It is expected to penetrate as much as 60 meters [200 feet] through 5,000 psi reinforced concrete. It will burrow 8 meters into the ground through 10,000 psi reinforced concrete. Northrop Grumman is working on with Boeing to develop this conventional bunker buster. They are under contract to Air Force Research Laboratory's Munitions Directorate at Eglin Air Force Base, Florida, and Defense Threat Reduction Agency.

What the hell do they use to drop this thing? The article isn't the clearest, but I'm thinking the B-52 or the B-2 would carry this.

I still would prefer Rods from God.