Relic of the Future: Chapter 20

Jaune's left hand crept down to his belt, where two charges were connected. Each on its own would have the force necessary to take out a supporting column, but if he could find the dust cache, it could take out the whole building.

[...]

As the man droned on, Jaune brought forth one of the charges and attached it to the wall, dialling in a command and connecting the blue wire. With the push of the central button, the screen flashed once and held. Demolitions wasn't as simple as putting a bomb on a position and hoping for the best, and there were few who could match up to Delta's expertise. As he put it, demolition was an art and a science all in one. It was in knowing just how much, or how little, was needed to both destroy a building, and to only destroy a certain part of it.

Jaune hadn't really learned enough of the math to get that specific, but when it came to erasing a given area, he knew how much would be overkill. This was overkill.

[...]

Another charge went down, this one on top of a crate he pried open, resting among cartridges of dust, all sparkling like glitter. The crate had the SDC logo on the side, proving that even now, Jacques was skimping on adequate protection for his shipments.

Jaune slipped out without a single person seeing him. Back in the alleyways and a safe distance away, he brought out a small pen and flicked a switch.

Heat washed over his back as the building detonated.

[...]

As the morning dawned through rain over Vale, Qrow kicked aside a scorched brick and looked toward the wreckage of what had once been a warehouse.

Seven was too early to be up on a Saturday, but Ozpin wanted eyes at the scene. Not that it would do much good now, Qrow considered. The fight, or what he imagined entailed a fight, was well over now.

"Not much evidence to work with," an officer reported. "We've found signs of weapon casings and weapons themselves, but they're badly burned. It's possible something went wrong, and the dust and ammo ignited."

—Relic of the Future: Chapter 20