He's a former Marine officer who earned a Silver Star at Khe Sanh in the Central Highlands of Vietnam. He was critically wounded during the battle. He's unlikely to take lightly being leaned on by some Chicago thugs.
i once saw a documentary about Khe Sanh. It made the final scene of Platoon look like a tea party.
I did not know his wounds there were that serious. Some how I think Judge Carter takes The Constitution and defending our soldiers VERY seriously.