Applejack and Shining Armor were helping the soldiers carefully placing a blaster cannon inside trenches. Crystal ponies were in a single line at each transport to prepare the evacuation. Charming Thunder was in the throne room waiting for Twilight to enter until he felt a rumbling sound coming from outside. The soldiers outside heard it too. Even the pilots who were getting in their speeders. The soldiers at the trenches readied their weapons as the commander looked through his binoculars. In the distance, he saw four walkers approaching the kingdom. "Charming Thunder," the commander said on his comlink. "We have spotted walkers."