Thinking carefully.
The army saw the group of four and didn't show up immediately because they wanted to wait for the opportunity to kill the man and the woman to stay. But Old Frank became a zombie by accident, causing the army to instinctively fire and kill, exposing the army, and had to take the remaining three people back, and the car repeatedly said this sentence was "one man and two women". The cry of the heroine who has just arrived in the army should also imply a vague knowledge of the situation she is about to face.
Some people say that Old Frank was wronged for his death, but without him, there would be no story behind it.
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