Arizona Senator John McCain died Saturday -- 24 hours after his family announced that he would discontinue cancer treatments. Lesley Stahl looks back on the life of the longtime senator and American hero. As the U.S. steps up the fight against Chinese theft of U.S. trade secrets and intellectual property -- Bill Whitaker reports on the many Americans wrongly accused of espionage-related crimes. Plus -- Jon Wertheim gets an inside look at the Harvard Lampoon. Those stories on tonight's "60 Minutes."Learn more about your ad choices. Visit megaphone.fm/adchoices