Lance Cpl. Greg Buckley Jr.
The killing, and others like it, has prompted U.S. military leaders to call for drastic new action to stop deadly insider attacks where allies turn their guns on Americans.
A training program designed to put guns in the hands of 340,000 Afghan policeman and security personnel is part of the U.S. withdrawal strategy. Increasingly, though, some of those weapons are being turned on their trainers.
On Friday, Lance Cpl. Greg Buckley Jr. was one of six U.S. service members the military said was shot to death by an Afghan police officer. He had just turned 21.
The parents of Lance Cpl. Greg Buckley Jr. will travel to Delaware Monday to bring his body home to Long Island for burial.