In Ohio, SWAT tears down a house to arrest two brothers wanted for murder. In Washington, a high-speed pursuit ends when a crash entangles an officer's car in live electrical cables. In Texas, a DWI driver hits a goods train carrying explosive chemicals.

In Colorado, an unpredictable armed ex-convict takes his family hostage and threatens to kill them and himself. In Florida, a gas station robbery leads to a life-threatening attack on a police officer and a night-time manhunt in the woods.

An armed robber starts a deadly shootout on a city bus in Maryland. A California police officer races to drag a man from a wheelchair stuck on a train level crossing. In Ohio, police officers attempt to rescue a woman trapped inside a raging house fire.

A car crash ignites a fireball that threatens a Maryland officer making a traffic stop. In Ohio, an armed burglar hides in a closet, and officers must smoke him out. In Texas, an officer confronts a wanted felon who suddenly pulls a gun on him.

In Florida, a man is shot dead with a single bullet to the chest. It looks like a murder, but the inquiry takes a surprising turn. In Oklahoma, a high-speed pursuit turns rescue mission as the chase ends in a fiery crash.

An undercover agent buying drugs and guns from Florida gangs finds himself at the wrong end of the barrel. A young mom and her kids are about to be swept away by a sudden torrent, and a truck plows recklessly through rural Ohio.

A Washington State car chase ends with a shootout and a K9 fighting for its life. Pensacola police officers attempt CPR on a drowned 3-year-old girl, and a convoy of Ohio police cruisers scream through downtown Columbus in pursuit of their own car.

Hundreds run in terror as a gunman opens fire in an Indiana bingo hall.

A home invasion ends in a shootout, and a robbery escalates into a manhunt.

A routine traffic stop turns violent, and police conduct a frantic search

A burglar hides behind a pregnant woman, and a car chase triggers gunfire.

Store robbers take a hostage, and a drunk driver hits a mom and her baby.

A body displays a grisly surprise, and cops stand off with an armed abuser.

A man holds a driver at gunpoint, and a plane crashes onto train tracks.

A handcuffed man flees in a squad car, and a gas station shoot-out erupts.

A body leads to a high-speed chase and a felon steals a squad car and guns.

A man shoots his baby's mom, and a marijuana heist sparks a chaotic chase.

A routine traffic stop in Georgia turns into a high-speed chase; a hostage situation in Ohio turns into a deadly firefight; a fleeing suspect crashes into a truck in Texas; and police are forced to battle the ensuing fire to save an innocent victim.

A suspect shoots two officers, and a dad threatens to blow up a community.

A house burglary in Michigan turns fatal as the suspect holds the homeowners and their child hostage and opens fire on police; police following carjackers in Florida find themselves chasing two different suspects.

A baby's life hangs in the balance when an ex-con takes him hostage.

In Washington State, an off-duty officer spots a wanted criminal in an elementary school; officers in Georgia chase a woman on a violent rampage in her car; in Florida, a stolen car crashes, and the suspect flees into an alligator-infested marsh.

Police race through the night, pursuing an armed car thief; when an officer comes to the aid of a suspect's dogs, his act of kindness gets shot down in a hail of bullets; a couple's beef turns an officer's day on its head.

In Wisconsin, officers cautiously approach a dangerous driver's wrecked car. Refusing to exit the vehicle, the driver suddenly opens fire on them. In Washington State, a community rallies to protect two officers shot in the line of duty.

In Florida, a father kidnaps his own child. A wanted fugitive in Georgia fires six shots at a police officer, igniting panic in the neighbourhood. And in Ohio, a suspect attempts to evade police by escaping into a kids' daycare centre.