Safety First
John is a fire department captain and he knew it was foolish to proceed without any serious preparation. He knew there was a possibility that the structure beneath was unstable, so he thought of a plan. However, he could not execute it alone.
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The Team
John called up friends to ask for help. His plan included having backup in case something went wrong. There was an important task they had to complete before they could explore the space. He needed them to solve this mystery and execute this without getting hurt.