9-1-1's Eddie Diaz and Evan "Buck" Buckley are ready for the adventure of a lifetime - but their fun-filled road trip is about to turn into a total nightmare. In Us Weekly's exclusive sneak peek at the Thursday, March 12, season 9 episode, titled "Mother's Boy," Eddie (Ryan Guzman) and Buck (Oliver Stark) are cruising back from the National Firefighter Games in Nashville and headed home to Los Angeles when disaster strikes. Moments before the chaos ensues, the pair are seemingly making amends after a disagreement as Buck tells Eddie, "I'm sorry I called you gloomy.