Dallas police are joining a growing number of departments around the nation that are tightening foot chase policies to save lives. The vast majority of foot pursuits end in no injuries more severe than scrapes and bruises. But they can be fatal, as in the 2003 death of Tucson police

For example, under current laws the bureau is prohibited from creating a federal registry of gun transactions. So while detectives on tel...

Story Highlights 'There's really no preparation' for an incident like the attack in Rochester, N.Y. Emergency medical technicians sometim...