We got an inside look at the United States Marine Corps' intense 13-week basic training program in San Diego, California.

Aye, aye, sir! Aye, aye, sir! Narrator: This is Marine Corps boot camp in Parris Island, South Carolina. Before they become United States Marines, all recruits have to graduate from the Marine ...

It’s featured on T-shirts and Danbury Mint plaques, and it’s even an add-on option for boot camp graduation rings. And it’s where, as tradition says, the United States Marine Corps was ...