Was he employed by a government entity, such as the federal state or local government? If not, then no, he would not be considered a public safety Officer.
If yes, then possibly if he meets the criteria below:
A retired Public Safety Officer is defined as a law enforcement officer, firefighter, chaplain, or member of a rescue squad or ambulance crew who is retired because of disability or because you reached normal retirement age
The term “qualified public safety employee” means—