the numerous words are the way nick obey award in the oss sean baller word. has also provided consultation with band of brothers and for documentaries produced by bbc, the history channel and fox news. he served as a combat historian and a mean by full platoon during the battle of falluja and is in demand as an expert speaker on world war ii sabotage from the special operations and counterinsurgency on the battlefield. over the past 20 years, o'donnell has interviewed more than 4000 -- now 5000 veterans wanted america's worst world war i to afghanistan and specializes in unearthing and told stories that read like novels. please welcome patrick k. o'donnell. [applause] >> well, it's really a pleasure and honor to be here. this is the beginning of my book tour which just came out this week. as jim said, i've interviewed 5000 world war ii veterans. i spent an entire lifetime studying world war ii and the story of going to tell you tonight or today is an untold story and probably the most interesting story and never come across in the 44 years that i've been here