| Mark Marcario has had a lifelong interest in the events of Nov. 22, 1963. He was involved in the last two investigations of the assassination. He provided background information to a local NPR radio station in Los Angeles during the House Select Committee Hearings. Marcario attended the 1996 Assassination Records Review Board hearings in Los Angeles. He has been working with the research community on both JFK and 9/11. He recently donated recordings to the University of Texas, and is working with Architects and Engineers for 9/11 Truth.