As Pennsylvania reels from an attack that killed three officers and critically wounded two others, USA TODAY is looking at other police tragedies.

Police apprehended a man who allegedly drove his car into the gates of the FBI's field office in Pittsburgh in a "targeted attack." ...

WFAA crews saw dozens of police vehicles on the scene at the Downtown Suites motel in the 3400 block of Samuell Boulevard, ...

Video from the CBS News Texas Chopper shows a body and a trail of blood outside of a room on the motel's ground floor.

The 12-year-old child was reported missing on Aug. 14 and his body was found nearly two weeks later. On Sunday, Sept. 7, his ...