TMDb/9-1-1: Nashville Celebrity Buck & Eddie's bonding trip takes them to Nashville in the epic 9-1-1 crossover. Watch the trailer for fun, tension, and unexpected twists. April 5, 2026 AceShowbiz - The highly anticipated first crossover event between 9-1-1 and 9-1-1: Nashville is set to bring thrilling new developments, centering on a special bonding trip for Buck and Eddie. ABC has released an official trailer teasing the crossover, promising a mix of fun, tension, and unexpected twists as the two characters depart Los Angeles for Nashville.