The heaviest non-nuclear bomb in the U.S. arsenal, specifically designed as a “bunker-buster,”  has been ungraded according to the Pentagon.  Recent improvements to the 30,000 pound Massive Ordnance Penetrator allow the bomb to penetrate an astonishing 200 feet underground before exploding.  The hardened steel casing on the bomb weighs about 25,000 pounds which allows deep […]