The Jacksonville Jaguars are on the verge of hiring Atlanta Falcons defensive coordinator Ryan Nielsen to the same position, a person familiar with the search told The Associated Press on Monday. The 44-year-old Nielsen would take over for Mike Caldwell, who was fired along with seven defensive assistants a day after the Jaguars (9-8) ended the season by losing five of six and missing the playoffs. Jacksonville had issues on both sides of the ball, but coach Doug Pederson made Caldwell the scapegoat for the worst late-season collapse in franchise history.