Brian McDonald is accustomed to telling other people's stories. His books have been prime sources in several television documentaries and the sole inspiration for “My Father's Gun," a full-length documentary that aired on the History Channel. In his latest work, “Five Floors Up,“ he explores the history of four generations of a firefighter family. From the days just after the horse-drawn firetruck, to the devastation of the 1970s when the Bronx was Burning, to the unspeakable tragedy of 9/11, to the culture-busting department of today, a Feehan family member has been on duty with the FDNY. In this episode McDonald discusses what he has learned from interviewing these brave heroes.