If terrorists ever target Fargo, N.D., the local police will be ready. In recent years, they have bought bomb-detection robots, digital communications equipment and Kevlar helmets, like those used by soldiers in foreign wars. For local siege situations requiring real firepower, police there can use a new $256,643 armored truck, complete with a rotating turret. Until that day, however, the menacing truck is mostly used for training runs and appearances at the annual Fargo picnic, where it's been displayed near a children's bounce house. Fargo, like thousands of other communities in every state, has been on a gear-buying spree with the aid of more than $34 billion in federal government grants since the Sept. 11, 2001, terrorist attacks on New York and the Pentagon. The federal grant spending, awarded with little oversight from Washington, has fueled a rapid, broad transformation of police operations in Fargo and in departments across the country. More than ever before, police rely on quasi-military tactics and equipment. A review of records from 41 states obtained through open-government requests, and interviews with more than two-dozen current and former police officials and terrorism experts, shows police departments around the U.S. have transformed into small army-like forces. Many police, including beat cops, now routinely carry assault rifles.