When two hikers attempt to cross a narrow bridge over a rushing, icy river, what can go wrong does go wrong. Their mistakes--and incredible tale of survival--hold lessons on what not to do when faced with a scary challenge. Our experts also break down a shocking crash on a highway that should have killed everyone involved--but somehow didn't.

When two hikers attempt to cross a narrow bridge over a rushing, icy river, what can go wrong does go wrong. Their mistakes--and incredible tale of survival--hold lessons on what not to do when faced with a scary challenge. Our experts also break down a shocking crash on a highway that should have killed everyone involved--but somehow didn't.