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US: UPDATED - NFL quarterback targeted by laser pointer during playoff game
KMBC reporter William Joy highlighted the green laser beam, seen here on the center of Tom Brady's helmet. The laser appeared to be around 4 inches wide, and danced on the quarterback's upper body — it was not held steady. Video by Turner Twyman.
According to Joy, the beam was on Brady's eyes and helmet at least three times during the game: "…once right after the muffed Julian Edelman punt call was overturned when Patriots retook possession, once on a completion to Chris Hogan, and once on a deep ball to Rob Gronkowski."
The NFL's security department was looking into the incident. As of January 23 2019, Kansas City police have not received a complaint but say they will investigate if a complaint is filed.
From the Washington Post, Boston Globe, musketfire.com and many other news sources. Sports Illustrated has an especially detailed look at the safety and legal issues around laser pointer misuse at NFL games. Thanks to Doug McCullough for bringing this to our attention.
COMMENTARY BY LASERPOINTERSAFETY.COM: Based on the brightness and size of the beam in the videos, it is highly unlikely that this had enough irradiance (power density) to cause harm to any person's eyes.
Light from a laser pointer can harm human eyes at close ranges; within a few yards or meters. But at the distances involved, from a person in the stands to a player on the field, light from a handheld laser pointer would spread out (as the video shows) and would not be steady enough to allow dangerous heat to build up in the eye. This goes for both visible green light, and any non-visible infrared light (some poorly-constructed green laser pointers also emit non-visible infrared light).
The worst effect would be glare or brief flashblindness, like when a camera flash goes off close to a person's face. Since Brady did not seem to notice, and others — national sportscasters and the two teams involved — also did not notice anything unusual at the time, the laser targeting did not seem to affect the outcome of the play or of the game.
LaserPointerSafety.com has more stories about lasers misused during sporting events.
UPDATED February 3 2019: ESPN reported that Kansas City Chiefs officials, using videotape and eyewitnesses, identified the person who aimed a laser at New England Patriots quarterback Tom Brady. The person has been banned for life from the Chiefs' stadium. The officials have asked the Kansas City district attorney to bring the strongest possible charges against the person, to act as a deterrent.
ESPN also reported that "…members of the military have reached out to Brady to inform him that the lasers shined near his face could cause irreversible eye damage."
From ESPN and many subsequent sources such as the Boston Herald and CBS Sports