Friendly fire

Iranian Warship Hits Another With Missile During Training Accident, Killing 19 Sailors

Fifteen other sailors were injured in the incident, Iran's navy said.
By Parisa Hafezi, Reuters

NYPD Detective Killed By 'Friendly Fire' While Responding To Robbery

The robbery suspect turned out to be armed with a replica handgun, Commissioner James O’Neill said.
By Michael R. Sisak, Stephen R. Groves and Michael Balsamo, AP