Siblings Gregory Purvis and Leibra Gaines had left the celebration at Thunder Alley and were less than a block from their car when they heard gunfire.
A group of young men stood outside the Sonic, Purvis said. It appeared one of them was firing at random, spraying bullets like a rotating sprinkler from a gun held sideways. If there had been a prior confrontation, it was lost on the siblings.
Gaines, 22, never felt the bullet that passed through her upper right arm. A second bullet grazed her 17-year-old brother's finger while they were fleeing.
Across the street, they accounted for each other before they accounted for their wounds.
“I didn't realize I got shot until 5 or 10 minutes later,” Gaines said Tuesday evening at the family's home in Midwest City.
Purvis said it appeared the shooter was firing at random.
“The way they were positioned it kind of looked like they knew what they were doing, and they were waiting for us,” he said. “It wasn't like he was going after anybody in particular; he was shooting to kill.”