STEAM ROLLER. The code name used by U.S. Army Sergeant Averill B. Whitcomb. Steam Roller was born in Duluth, Minnesota and worked heavy cranes on the Great Lakes' docks, earth-movers in the Appalachian strip mines and graders on highways in half a dozen states. He was driving an M-15A2, 50-ton transporter when he was recruited to operate the the G.I. Joe team's Mobile Command Center. On the team, Steam Roller was known for being big, strong and tough. And some considered him stubborn, mean-tempered and uncouth. As Mobile Command Center driver, Steam Roller took part in several missions for the Joes.

 (GI 99, 100; Figure: 1)