The Atlanta Falcons prepared for the possible loss of projected starting free safety Dwight Lowery for the season by adding a veteran safety to the mix. Tyrell Johnson (6-feet, 207 pounds), who last played for the Detroit Lions, signed with the Falcons on Sunday, a day after coach Mike Smith confirmed Lowery suffered a concussion. The 29-year-old Johnson has five years of NFL experience, four with the Vikings. He is a former second-round pick from Arkansas State. Johnson started 27 games in Minnesota. Read more http://espn.go.com/nfl/story/_/id/1...y-doubtful-atlanta-falcons-add-tyrell-johnson
