Officers face a prison van hijack and strangers brutally attack a family.

n Wisconsin, a K-9 saves officers' lives by taking down an armed fugitive but gets shot in the head. In Connecticut, a patrolman comes under fire during a store robbery. In Oklahoma, a head-on collision with a deputy leads to a full-scale manhunt.

In Texas, an officer is shot multiple times during a foot chase. The race is on as backup tries to locate the injured officer and track down the assailant. In Washington State, a fugitive carjacks several vehicles, causing destruction on the roads.

In California, a man holds his child hostage. While officers negotiate with him, he sets the house on fire. And in Florida, criminals break into a jewelry store. The race is on to catch them before they escape with over $70,000 worth of jewelry.

In Ohio, cops face a hostage situation with a dangerous fugitive willing to go to extremes. In Maryland, armed robbers are caught in the act and run from the law. In Indiana, police risk it all to save circus animals inside a burning truck.

In Texas, a shootout with police leaves one officer injured while the suspect flees in his cruiser.

A shoplifter guns down an officer and deputies pursue armed robbers.

In Ohio, officers and firefighters rush to save lives after a gas explosion in a tower block.

Police chase a stolen U-Haul and a fugitive escapes and vanishes inside a hospital.