3 officers killed, 5 wounded during standoff
Moscow concert massacre: At least 137 killed, hundreds more wounded
Moscow concert massacre: At least 137 killed, hundreds more wounded
2 officers killed in upstate New York
2 officers killed in upstate New York
New details revealed in deadly Charlotte standoff
Police investigate shooting outside Drake's home that wounded security guard
New details revealed in deadly Charlotte standoff
Police investigate shooting outside Drake's home that wounded security guard
Cops engage in standoff with gunman in Pittsburgh
