The Pentagon is accelerating by three years its plans for a super bunker buster, the GBU-57A/B or Massive Ordnance Penetrator (MOP), a powerful new bomb aimed squarely at the underground nuclear facilities of Iran and North Korea . The gargantuan bomb is longer than 11 persons standing shoulder-to-shoulder or more than 20 feet base to nose and weighs over 15 tons (31,862 pounds). Some 18 percent of its total weight is comprised of explosives. The GBU-57A/B MOP is so immense it can only be carried by either a B-52 or a B-2A Stealth bomber. The weapons explosive power is 10 times greater than its predecessor, the BLU-109. Moreover, the GBU-57A/B MOP is one third heavier than the MOAB dubbed the Mother of All Bombs. This super buster all started with a break-through by the Raytheon Company when it developed and tested a new conventional warhead technology to defeat hardened and deeply buried bunkers. The new technology, called Tandem Warhead System, consists of a shaped-charge precursor warhead combined with a follow- through penetrator explosive charge. A small MOP prototype was exploded deep under the rugged mountains of the White Sands Missile Range in New Mexico in the caverns of the little-known Weapons of Mass Destruction National Testbeds. The slender orange-colored MOP small prototype was vertically hung, nose down, just inches from the floor of a narrow cavern and then detonated. During the test, the newly developed 1,000-pound-class test warhead set a record when it punched through 19 feet, 3 inches of a 20-foot,330-ton, steel rod-reinforced concrete block rated at 12,600 pounds per square inch compressive strength. In fewer than 10 milliseconds, the explosion delivered into the target more than 110 million foot-pounds of energy via a high-velocity jet of molten metal. After they let go a few of these on them there won't be much left to see.