The firefighters of the 126 will once again have to rescue one of their own on Monday night's new episode of 9-1-1: Lone Star, titled "Friends Like These." This time it's not about anyone getting crushed in a grain silo or becoming sick from noxious substance leaks, though; instead, the squad will have to band together to help Mateo (Julian Works) prepare for his final academy exam so that he can finally drop that "Probie" status and become a full-fledged member of the team.