An elderly firefighter in an orange suit is holding a fire hose with water coming out.
A firefighter is holding a fire hose with water comping out.
A firefighter is holding a fire hose is less descriptive than an elderly firefighter in an orange suit.
A person with orange suit holding a fire hose will be none other than a fire fighter.
"An elderly firefighter in an orange suit is holding a fire hose with water coming out" is a rephrasing of "A firefighter is holding a fire hose with water coming out"