Chicago Cops Killed Investigating Man 'Testing' Handgun

The two Chicago police officers who were struck and killed by a commuter train on Chicago's South Side earlier this week were responding to a man who was "testing" a handgun he found, prosecutors said Thursday.

Authorities Find Border Tunnel With Full Rail System

Mexican and U.S. law enforcement agencies discovered a highly sophisticated underground tunnel—featuring a rail system and solar-powered lighting—running underneath the border between Mexico and California.

'Gun-toting white supremacist' sentenced for train stop

On Friday, Taylor Wilson, who a year ago was armed with a loaded pistol when he pulled the emergency brake aboard an Amtrak train in southwest Nebraska was sentenced by a federal judge to 14 years in prison after pleading guilty to terrorism and illegal gun charges.