Silver's bat-like ears heard the approaching Juggernauts long before anypony else realized they were coming. When he headed outside to investigate, he saw them slowly approaching the encampment. A slight movement in the sky above them caught his eye, and and he realized that Celestia had also sent her Swifts. Silver grinned. A nice warmup before the real battle was just what he needed. Walking back inside the tent, he addressed Blackout and Cricket. "Blackout, wake up Rainbow Dash, and tell her that I want her and the other Shadowbolts to meet me at south entrance to the camp. Cricket, find Crimson, Ocean, and Midnight, and tell them the same. We're about to have some uninvited guests." Realizing that sounding an alarm would alert the enemy to the ambush, Silver instead whistled quietly three times, alerting any Night Guards within hearing distance to be on the lookout for enemies. The camp was soon filled with more whistling, as each Night Guard passed the message along. To the untrained ear, it would have sounded like the wind was blowing through the camp.