"Graduation Afternoon" is a seven-page short story originally published in Postscripts in March 2007, and was later included in King's own 2008 collection Just After Sunset.
The story concerns Janice Gandolewski, a high-school teenager dating the wealthy Bruce Hope, as she attends his graduation party and ruminates on their class differences. All of her concerns are swept aside, however, when she sees a mushroom cloud erupt over the New York City skyline.