Police must break into an apartment to save the lives of two women as their machete-wielding attacker leads officers on a dangerous pursuit. In Wisconsin, a winter storm causes a multi vehicle pile-up with emergency services battling to free the injured.

In Lyndhurst, Ohio, Police hunt down two bank robbers who will do anything to avoid capture. Nearby, in Lousiville, a heavily armed resident turns his sleepy suburb into a warzone.

A late-night report of grand theft auto leads to a brutal attack on an officer; An SUV crashes through the wall of a house and causes a devastating explosion; A man shoots two women before training the gun on the detective who tries to rescue them.

Constables in Texas are pushed to their limits when a high-speed car chase takes a dangerous turn and leaves the driver fighting for their lives. A routine call-out in rural Florida turns into a heavily-armed stand-off with SWAT officers.

In Colorado, a routine traffic stop turns deadly for a new Deputy. Officers in Georgia battle the flaming wreckage of a crashed car, with a woman's life on the line. And in Louisiana, a high-speed car chase leads to a deadly gun battle.

In Pueblo, an armed suspect fires at the police before embarking on a dangerous pursuit. In La Vista, a man locks himself in his garage, but as police try to get in, it suddenly catches fire, and they don't know if this is a rescue mission or an ambush.

In Florida, after a high-speed chase, a sheriff's K9 is let loose on its first pursuit; deputies in an Arkansas jail face a battle when inmates turn violent; in Georgia, officers head into the woods to hunt down a violent felon.

A woman is trapped in her burning home, and her only hope of rescue lies with a local deputy. A trainee officer in the middle of a high-speed pursuit pushes his skill to the limit. A gunman in Ohio sets a trap for officers trying to rescue a family.

All police units desperately try and catch the suspects who snatched a baby from the hands of its mother and return the child; officer makes a routine traffic stop and ends up fighting for his life when he suffers a severe reaction.

In Georgia, Police officers respond to a 'trouble unknown' call suspecting a possible medical emergency. Moments after arriving on scene, they are ambushed by an armed assailant and find themselves battling for survival in a life or death stand-off.