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buy omnicef LAWRENCE: Hartnett's official job was unrelated to combat. But he found out he could volunteer for convoy security. The trucks delivering humanitarian aid would creep through Mogadishu with a Marine escort. Civilians would slow down the convoy, then snipers would take shots from nearby alleys. People would steal from the trucks. The Marines couldn't shoot unless fired upon, so it was Hartnett's job to keep the crowd back - which he did, with an ax handle.