Richard Allensworth Jewell was an American security guard and law enforcement officer who alerted police during the Centennial Olympic Park bombing at the 1996 Summer Olympics in Atlanta, Georgia. He discovered a backpack containing three pipe bombs on the park grounds and helped evacuate the area before the bomb exploded, saving many people from injury or death. For months afterward he was suspected of planting the bomb, resulting in adverse publicity that "came to symbolize the excesses of law enforcement and the news media".

A security guard is a person employed by a government or private party to protect the employing party's assets from a variety of hazards by enforcing preventative measures. Security guards do this by maintaining a high-visibility presence to deter illegal and inappropriate actions, looking for signs of crime or other hazards, taking action to minimize damage, and reporting any incidents to their clients and emergency services, as appropriate.