I was talking to my SIL after dinner Sunday and he knew all about this bomb---he did not say if he ever dropped any but they have been in use for some time. He then told me about another bomb that has not had much publicity. It also was developed to minimize collateral damage. It has no explosives in it---only concrete! He said they dropped a lot of them in Afghanistan. They don't leave much standing. Apparently, if the bomb doesn't get you, the building will when it falls down.