Dean Cain has paid tribute to his former Stars Earn Stripes mentor, retired Navy Seal Chris Kyle, following his sudden death on Saturday.

The marksman was shot dead at a gun range in Glen Rose, Texas. A former Marine, Eddie Ray Routh, has been charged with his murder.

Now Cain, who was paired with Kyle on the 2012 reality series, which showed members of the Armed Forces training celebrities to compete in various challenges for charity, has spoken out in the wake of the tragedy.

In a post on Twitter.com, the Lois & Clark: The New Adventures of Superman star writes, "2013 started out fa...