The soldiers numbers dropped as they seemed to give up on the battle, kneeling to the floor with there guns set down. It was at this time that the group would notice a high pitched ringing come form not one, but all of the troops. This was the tell tale sign of a nearing detonation, giving the group a warning to get out as quickly as possible. The door was still open from the officer's earlier leave, giving the group a easy exit if they could move fast.