After adding defensive backs Delvin Breaux and Erik Harris out of the CFL the last two seasons, the team went back North on Wednesday evening and signed linebacker Adam Bighill and defensive back Forrest Hightower out of the league. A five-time CFL All-Star, Bighill, 28, has recorded 489 tackles, 33 sacks, eight interceptions and eight forced fumbles over 99 games in the CFL.