State officials are asking pipeline operators around Minnesota to step-up security in the wake of this month's terrorist attacks. 85 pipeline companies operate 62-thousand miles of line that carry natural gas and several hazardous liquids. Those lines criss-cross the state. A presidential commission warned in 1997 that the nation's pipeline system is an attractive targets to terrorists. But Univeristy of Minnsota Chemical Engineering professor Lenny Schmidt says terrorists using the pipelines wouldn't get an effect anything like the September 11th attacks.