You load 15 tons, and what do you get? A big hole deeper and your enemies fret.
St. Peter's going to call them and where will they go? The hole's already dug to the place that they go.
The only thing I have ever personally loaded into the bomb bay of an aircraft was several cases of Coors in an FB-111A. But can you imagine the pucker factor for sticking that big pickle in a bomber? Yikes!