An agent with U.S. Customs and Border Protection put a piece of his training to work while waiting at a fast-food restaurant.
A release from the federal agency says Robert Lee was at a Carl's Junior in Douglas over the weekend when he noticed a family in distress because their child appeared to be choking.
Lee gave the 6-year-old two forceful blows to the back with his palm and the child immediately began breathing.
Firefighters arrived on the scene and determined no further medical attention was required.
All agents in the Tucson sector of the patrol was trained as first responders. The division also employs more than 250 EMTs and 15 paramedics.