Ralph Waite, who played the warm-hearted Jackson Gibbs, brought a profound depth to the series until his passing in 2014 at 85. Meanwhile, Michael Gilden, despite his small stature, commanded attention on-screen as Marty Peardon, tragically passing away in 2006 at 44. Franchesco Quinn, whose powerful performances resonated with viewers, also departed too soon at 48 in 2011.