I’m still waiting for a phone call to hear, ‘Hey, Sis, I miss you,’ ” the victim’s sister told the judge before sentencing.

Narrator: It's part of their final test at boot camp, known as the Crucible, a 54-hour event that all recruits must complete. More from Boot Camp ...

Recruit: Aye, aye, sir! Aye, aye, sir! Aye, aye, sir! Aye, aye, sir! Narrator: This is Marine Corps boot camp in Parris Island, South Carolina. Before they become United States Marines ...