Video: Heroes: J.R. Martinez on supporting injured veterans

J.R. Martinez describes his connection with Operation Finally Home, a nonprofit that gives free homes to injured vets. Watch CNN Heroes: An All-Star Tribute, hosted by Anderson Cooper, live on Sunday, December 11 at 8 p.m. ET. This year, J.R. will co-host the pre-show with A.J. hammer at 7 p.m. ET!