As far as I know, the planar version was never operationally fielded, but the cruciform wing version is still in the inventory (though with a different, simpler set of fins). Later, the Air Force strapped a big old rocket motor underneath it, and presto! turned it into the AGM-130. The GBU-15 itself was a follow on to the GBU-8 HOBOS (Homing Bomb System) which saw limited use in Vietnam. The GBU-8 had trouble staying locked on to low contrast targets, but the idea clearly had potential. Add an improved seeker, and a few other tweaks, and the GBU-15 was born.
As far as I know, the planar version was never operationally fielded, but the cruciform wing version is still in the inventory (though with a different, simpler set of fins). Later, the Air Force strapped a big old rocket motor underneath it, and presto! turned it into the AGM-130. The GBU-15 itself was a follow…
XBradTC 
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