Drones have been banned from flying within 32 miles of American Football's Super Bowl, the Federal Aviation Administration (FAA) has said.
In a video to sports fans, the FAA warns the stadium is a "no-drone zone".
The restrictions cover anywhere within 32 miles of the Super Bowl stadium in Santa Clara, California, between 14:00 and 23:59 PST on 7 February.
FAA regulations also advise that "deadly force" may be used if a drone is perceived as a security threat.
The Super Bowl is the climax of the football season, and a crowd of 70,000 is expected for this year's game.
"Bring your lucky jersey, bring your facepaint, bring your team spirit," the video announces, "but leave your drone at home."
No-drone zones have become commonplace in the United States at sports and entertainment events at which large crowds gather.
Furthermore, permanent restrictions are in place over sensitive buildings - such as airports and the White House.
FAA regulations state: "The United States government may use deadly force against the airborne aircraft, if it is determined that the aircraft poses an imminent security threat."