After they talked with Frank, Mark and Julia came out of the tent while showing complicated expressions. It wasn't hard to imagine that he probably gave them some orders in order to establish himself as the absolute leader of the camp.
"Why the long faces?" Luke asked. "It is nothing like there are many things worse than an zombie apocalypse."
"We just heard that Frank managed to establish contact with some survivor camps across the country, and the number of crystals is astonishing," Mark replied. "We also received the orders to help Billy on the frontlines and destroy those."
"Are you fine receiving orders from someone who is on the same rank as you?" Luke asked.
"I think Frank is better suited for that…" Mark replied while rubbing his chin. "While I can't say that confidently since I had to be rescued by my own son, I feel like I will be able to do more on the frontlines as well."