“Compassionate Use” examines how pharmaceutical companies can sometimes offer drugs to critically ill patients before clinical trials for those drugs have been completed. “The Tiny TV Network with a Big Mouth” looks at Qatar’s Al-Jazerra television network. “Back to My Lai” follows two Americans who saved lives during the My Lai massacre as they return to visit Vietnam and meet some of the people they saved. “Andy Rooney” talks about Bob Kerry’s military service in Vietnam.