Book excerpt: In the chaotic weeks after September 11, 2001, Dr. Robert Gillio found himself at Ground Zero where, as a pulmonary physician, he answered the call to assist in the medical assessment and care of the brave rescue workers who were putting their lives on the line there. He came to know and be inspired by not only those workers, but also the hundreds of volunteers who tirelessly supported the rescue efforts in myriad ways. Lessons Learned at Ground Zero is Dr. Gillio’s story of those he calls “heroes and angels.” In Part One, he recounts their sacrifices and dedication and is humbled to witness the triumph of the human spirit over astonishing adversity. In Part Two, he utilizes his experiences at Ground Zero to design a Call to Action, which can be implemented by individuals, schools, communities and entire states. He challenges each of us to be heroes and angels and to take charge of our own health and well being. He offers practical tips to Prepare, Prevent and Respond to ordinary and extraordinary events. Finally, he shares his vision for a “Freedom Generation” wherein personal responsibility, technology and well-formed agency coalitions merge to create a smarter, safer, healthier America for all of us.