Michael Gale Garbo, 51, was a supervisory special agent with the Drug Enforcement Administration and a former Metropolitan Nashville police officer. On the morning of October 4, 2021, while leading a joint DEA–Tucson Police interdiction on the Amtrak Sunset Limited in downtown Tucson, Garbo and another agent approached two men after luggage was flagged by Amtrak staff. A backpack moved several rows from one man was found to contain bulk marijuana and numerous marijuana edibles, prompting agents to re-enter the train car to detain a second suspect.

As the agents approached, the second man opened fire at close range. Garbo was struck multiple times and mortally wounded where he stood; a second DEA agent and a Tucson police officer were also shot and injured. Law enforcement returned fire; the gunman, identified by the Pima County Medical Examiner as 26-year-old Darrion Taylor, died at the scene from gunshot wounds sustained in the exchange. The other man, identified as Devonte Okeith Mathis, was taken into custody and linked to approximately 2.4 kilograms of marijuana and many edible packages consistent with distribution.

Garbo was remembered by colleagues and officials for his leadership, mentorship, and operational skill, and was honored at services attended by peers, family, and law enforcement leaders. If anyone was on that Sunset Limited car that morning or knew more about the two men involved, share what was seen or heard that could help complete the timeline.