As a member of the Texas Rangers from 1966 to 1993, Joaquin Jackson watched the evolution of the law enforcement agency into a modern outfit. In his adventure-filled memoir "One Ranger," Jackson recalls what it was like to respond when riots threatened, violence erupted and criminals needed to be brought to justice along the Texas-Mexico border. Jackson, an NRA board member, also responds to President Obama's call to re-institute the assault weapons ban.