Space Explosions

The aliens have arrived on the planet Shikotaka to take some samples for analysis, and are now trying to fly back. They did not get to fly up because they interfere with some obstacles. Runway spacecraft passes right through the metal tower, which is an urgent need to destroy. Rather invent ways of destruction of persistent objects and use a logical chain in practice. Fuses place in such a way that the tower collapsed first groove finally and irrevocably.