New Rules
After the whole incident, the officials of Yellowstone National Park decided that they need to do something and make sure these things do not happen. First of all, they educated their guides to never leave the tourists. They even hired more guides to make sure tourists would be safe.

Then they installed new signs all over the park so tourists can see. They also shared with the tourists that not obeying this rule would result in a fine and a ban from Yellowstone National Park.