"The last time we used small bombs from drones, the effect was minimal. This time, we used mechanical dogs to secretly approach from multiple directions and deliver the explosive packages near the target building."
The shelter stored more than a dozen tons of ammonium nitrate, which seemed insignificant as fertilizer but was more than enough for making explosives.
Ammonium nitrate, after a simple preparation and mixed with melted sugar, became a relatively safe improvised explosive. Coupled with a bullet primer or an electronic detonator, the method of detonation was simple and feasible.
Three mechanical dogs set off with explosive packages, one approached the "fortress" head-on to draw Nedved's attention.
The other two mechanical dogs, like cunning hunters, each carried a half-kilogram explosive package, silently circling from the side and rear.
