the Opelousas and Thibodaux offices. The old Region 4 covered the following parishes: Lasalle, Concordia, Catahoula, Caldwell, Franklin, Madison, and Tensas. Rank structure The Louisiana Department of Wildlife & Fisheries Enforcement Division rank structure is as listed: Duty weapons The current standard issue firearm for wildlife enforcement agents is the SIG Sauer semi-automatic pistol in .45 ACP. Each agent is also issued a Remington 870 Police 12 gauge shotgun. Agents are also issued (since Hurricane Katrina) SIG SG 551 carbines chambered for .223 Remington. These agents also come equipped with collapsible batons and pepper spray. Patrol vehicles Louisiana Wildlife agents patrol in a wide variety of vehicles. The main patrol vehicles are four-wheel-drive pick-up trucks made by Ford, Dodge, or General Motors. The Ford Crown Victoria "Police Interceptor." is also used in some roles. A wide variety of watercraft are employed by the agency, most notably the Boston Whaler. Several different manufacturers' 4-wheeler ATVs are also used. The Enforcement Division also utilizes several single engine fixed winged aircraft, as well as several large offshore patrol boats. Special units Like many other police agencies around the United States, LDWF has several sub-divisions in specialized tasks. LDWF/LED contains four specialized units with selected missions or purposes: the Special Operations Section; the Statewide Strike Force; the Maritime Special Response Team; and the Aviation Section. Agents in specialized units have developed specific skills, expertise and knowledge appropriate for their particular operational fields. Agents in specialized units operate in relatively broad geographic areas and may work alongside regional enforcement agents when appropriate. The Special Operations Section houses covert operations in which undercover agents work to stem the illegal sale of fish and wildlife, develop information about ongoing criminal enterprises, and address major violations of state and federal law. The Statewide Strike Force is assigned to work problem areas statewide. They devote attention to commercial fisheries operations and license fraud. Violations include smuggling, interstate commerce violations and false reporting, and under-reporting of commercial fish harvests. These agents provide regions with additional manpower on WMAs and places of high seasonal utilization, such as Grand Isle and other locations throughout the state. Strike Force agents also assist regional agents with oyster harvest enforcement, which primarily addresses harvesting oysters in closed waters, stealing from oyster leases and state grounds, and oyster size regulations. The Maritime Special Response Team cooperative endeavor by the LDWF Enforcement Division and the Louisiana State