keywords: convoy sgt armored marines grenades
text: In Iraq, Courtesy Call Takes Poise and Patience Staff Sgt. Chris Fritz set out for a meeting with the mayor of Musayyib to discuss the needs of the city in a convoy of nine armored trucks equipped with .50-caliber machine guns and Mark 19 automatic grenade launchers. He was protected by three dozen Marines wearing full body armor and carrying assault rifles and assorted mortars and grenades.