The stalled Cadillac was old, the man with it also old. A volunteer firefighter from Prince George’s County recognized them both Saturday as he drove to his firehouse, and he stopped.

The 1993 Eldorado was out of gas. The man, 82, had been missing since Thursday. A Silver Alert had been issued.

Ed Stoner of the West Lanham Hills volunteer fire department knew of the alert, and the Landover-area man was soon reunited with relatives.

That left the car. Stoner called fellow volunteers, who brought gas to Veterans Parkway and Annapolis Road. The car was driven to the firehouse, where a relative of the man picked it up.

Many missing person reports are issued, but outcomes are not always publicized. Saturday’s incident showed that someone was willing to get involved, and also that the alerts “do work,” said Mark E. Brady, spokesman for the county fire department.