Please note: Sometimes, NPR publishes headlines before the story and/or audio is ready; check back for content later if this occurs. We also publish national/world news on our home page from AP, BBC, and others.
The recent targeted attacks on police in Dallas and Baton Rouge have law enforcement on edge. Some departments are telling officers to patrol in pairs when possible, and to be extra vigilant about possible ambush.
Complicating matters is the question of how to interpret and react to the presence of a gun. With more Americans now exercising their legal right to carry firearms, police find themselves having to make rapid judgments about whether an armed citizen is a threat.