 The department's official mission is to protect public safety by quick and professional response to emergencies and the promotion of sound emergency prevention measures.This mandate encompasses all traditional firefighting functions, including fire suppression, with 60 engine companies and 30 ladder companies as well as specialty and support units deployed throughout the city; specialized firefighting units for Philadelphia International Airport and the Port of Philadelphia; investigations conducted by the fire marshal's office to determine the origins of fires and develop preventive strategies; prevention programs to educate the public; and support services including research and planning, management of the fire communications center within the city's 911 system, and operation of the Philadelphia Fire Academy.Philadelphia's two major daily newspapers are "The Philadelphia Inquirer", first published in 1829—the third-oldest surviving daily newspaper in the country—and the "Philadelphia Daily News", first published in 1925.