Ruslan couldn't agree more with Liz's sentence. Roxy is indeed the team's navigator right now, and the team can't go on a regular vehicle anymore with about a dozen people going. But he just can't imagine them driving a bus or troop transport vehicle under pursuit, that puts them at significant disadvantage. Meanwhile, the pursuers start to move into the tunnels, but as soon as they look at the team, Ruslan pushes them back. He knows he can't keep holding them that way though, for there are more of them coming.