Department of Homeland Security and FBI issue security bulletins . The bulletin is a list of the most common threats to public safety in each state, including violent crime and terrorism. However , it said that terrorist groups such as al Qaeda view crowded stadiums and arenas as potential targets . Crowds at stadiums , hotels generate terrorist attention , agencies say .
Department of Homeland Security and FBI issue security bulletins . The bulletin is a list of the most common threats to public safety in each state, including violent crime and terrorism. Crowds at stadiums , hotels generate terrorist attention , agencies say .