Specialist Donnie Erwin of Dallas, with the US Army's A Company 1st Battallion 66th Armored Regiment based in Ft. Hood, Texas, shows the damage to M1-A1 tank following an RPG (Rocket propelled grenade) attack by unknown gunmen at Samarra, 120 kilometers, 75 miles, north of Baghdad, Iraq (news - web sites) Thursday June 19, 2003. Ambushers fired a rocket-propelled grenade that struck a U.S. tank in Samarra, said Sgt. Steven Stoddard with the Army's 4th Infantry Division.