And the first responder is....wait for it....a librarian?? At the McPherson Square Library in Philadelphia, residents stop by with questions about doctor visits and legal matters. Children eat meals provided by library staff and play with water rockets in a Science, Technology, Engineering, Arts and Mathematics program. And the librarian has taken on the role of first responder in drug overdoses. Learn how “all hands on deck” takes on a new definition when heroin hits hard.