McCain's spirit was ‘never broken,’ says defense secretary

Judy Woodruff looks back on the prolific and storied career of Sen. John McCain, from his military heroism to two disappointing presidential campaigns to a reputation as a party maverick. Former Secretary of Defense William Cohen was a close friend of McCain's, serving as a groomsman at his 1980 wedding. He joins John Yang to remember McCain's irrepressible humor and “restlessness” to do more.