The authorship of The Associated Press’s renowned “napalm girl” photograph is being called into question in the new documentary “The Stringer,” which premiered at the Sundance Film Festival in Utah.

It's one of the most enduring images of the Vietnam War — an Associated Press photograph of a young girl running naked down a street after being caught in a napalm attack.

Hal Buell, who led The Associated Press’ photo operations from the darkroom era into the age of digital photography over a four-decade career that included 12 Pulitzer Prizes, has died.