There is a good piece about the use of the BLU-82 in the Gulf, in the book Storm Over Iraq. They detonated the first one in the middle of the empty desert, a few ks from the closest Iraqi positions. Many witnesses thought they'd seen a nuke go off! The MC-130E that dropped it, then flew over the Iraqi positions, dropping leaflets, which informed the unfortunate troops that they were next on the target list. This resulted in the defection of an entire battalion that night!