Every night, five to six Patrol Teams would escort back and forth, maintaining strict guard; not even a mosquito could get in! There had never been any problems before.
However, on the evening of July 4th, the Patrol Team taking over duty patrolled around the Sanatorium as usual. They were all professional soldiers with extremely high alertness and had undergone specialized reconnaissance training. Each of them had eyes like torches and gazes like eagles. Any slightest movement in the surroundings would draw the Patrol Team's attention for inspection. That night, they did the same.
