I really doubt he was “mowing the lawn”.
More likely the mower was running and or just needed to be put away.That was a nice gesture.
I had a friend in Ft Laud 30 years ago that was mowing his lawn near Commercial Blvd and ne 18th ave and went in to take a leak and some one stole his mower.
What a country
and rather than help the dad the sons taking pics for Facebook,Nice kid