Two of the four Americans who were killed in the attack on the U.S. Consulate in Benghazi, Libya had already been identified by the State Department. They were Tyrone S. Woods and Glen A. Doherty — both were former Navy SEALs who provided security at the consulate.

Doherty, 42, was working as a private security contractor for the government when a group of heavily armed protesters stormed the consulate complex. He was a Navy SEAL for roughly eight years before shifting to private security, his sister, Kate Quigley, said in a story featured on Stars and Stripes.

“My take is I know he died protecting America and he died trying to help anybody who got hurt that day,” Quigley said. “To be honest with you, Glen was so good at what he did, I don’t think he went down to a couple protestors over a video. But whether it was a video or a bigger thing, I don’t know. I know he died protecting this country.”

Quigley shared that Doherty flew to Libya on Sept. 5 and his family only learned of his death late Wednesday afternoon.

“We all knew the risk, but he’s come back time and time again,” Quigley added. “He was really good at what he did. He was a sniper. He was in Iraq when the palaces came down after Saddam Hussein.”

Meanwhile, Tyrone S. Woods, according to the State Department news release, had protected American diplomatic personnel in posts from Central America to the Middle East since 2010. He was a registered nurse and paramedic. He is survived by his wife, Dorothy, and three sons, Tyrone Jr., Hunter, and infant Kai.