Houston attorney Dick DeGuerin testified at the trial that protruding metal on the inside of the right - hand entry door made it clear that the bullet holes were made by incoming rounds .
Houston attorney Dick DeGuerin went inside Mount Carmel during the siege .
Houston attorney Dick DeGuerin , who went inside Mount Carmel during the siege , testified at the trial that protruding metal on the inside of the right - hand entry door made it clear that the bullet holes were made by incoming rounds .