Photos posted to Facebook of the kind deed have gone viral.
On Tuesday, John McCormick, 65, suffered a heart attack while mowing his lawn in Bayton, Texas.
KHOU reports a group of emergency vehicles responded: paramedics performed CPR, and McCormick was taken to hospital.
But then, according to the station, engine driver Luke Bednarek thought it would be a nice gesture to go back and finish mowing the lawn for him.
A neighbour took pictures and posted them to the City of Baytown page on Facebook – they quickly went viral.
Firefighter Blake Steffanauer told the station: "I just happened to get off the truck first, had the lawnmower first – we were all fighting over it."
