of the county in 1977. Firefighters were certified as Cardiac Rescue Technicians and deployed in what was called at the time Mobile Intensive Care Units to fire stations in Brentwood, Silver Hill, and Laurel. As of 2007, the Prince George's County Fire/EMS Department operates a combination system staffed by over 800 career firefighters and paramedics, and nearly 1,100 active volunteers. County law has, for years, required to seize all pitbulls from their owners if they become aware of them. This is controversial and Animal Control itself objects to this law. It has routinely required them to act when they see such a dog behaving peacefully inside of a private home merely because Animal Control is checking something unrelated. Transportation The County contains a 28-mile portion of the 65-mile-long Capital Beltway. After a decades-long debate, an east–west toll freeway, the Intercounty Connector ("ICC"), which extends Interstate 370 in Montgomery County to connect I-270 with Interstate 95 and U.S. 1 in Laurel, opened in 2012. An 11.5-mile portion of the 32.5-mile-long Baltimore–Washington Parkway runs from the county's border with Washington, D.C., to its border with Anne Arundel County near Laurel. The Washington Metropolitan Area Transit Authority operates Metrobus fixed-route bus service and Metrorail heavy-rail passenger service in and out of the county as well as the regional MetroAccess paratransit system for the handicapped. The Prince George's County Department of Public Works and Transportation also operates TheBus, a County-wide fixed-route bus system, and the Call-A-Bus service for passengers who do not have access to or have difficulty using fixed-route bus service. Call-A-Bus is a demand-response service which generally requires 14-days advance reservations. The county also offers a subsidized taxicab service for elderly and disabled residents called Call-A-Cab in which eligible customers who sign up for the service purchase coupons giving them a 50 percent discount with participating taxicab companies in Prince George's and Montgomery Counties. Mass transit Prince George's County Metro Rail Washington Metropolitan Area Transit Authority has fifteen stations of the Washington Metro system located in Prince George's County, with four of them as terminus stations: Greenbelt, New Carrollton, Largo, and Branch Avenue. The Purple Line, which would link highly developed areas of both Montgomery and Prince George's Counties is currently under-construction and slated to open in 2022. The Purple Line will provide connections to the Washington Metropolitan Area Transit Authority's Red Line (Washington Metro) via Northern Prince George's County and Montgomery