MP4 : Robert S. Walker, Former Congressman at U.S. House of Representatives Pennsylvania, Executive Chairman of Public Affairs Company Luxor Walker in WashingtonFLV : Robert S. Walker, Former Congressman at U.S. House of Representatives Pennsylvania, Executive Chairman of Public Affairs Company Luxor Walker in WashingtonMP4 FOR IPOD (edge) : Robert S. Walker, Former Congressman at U.S. House of Representatives Pennsylvania, Executive Chairman of Public Affairs Company Luxor Walker in WashingtonMP3 : Robert S. Walker, Former Congressman at U.S. House of Representatives Pennsylvania, Executive Chairman of Public Affairs Company Luxor Walker in Washington