Police are ambushed as they try to rescue a gravely injured pregnant woman.

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.

A deputy races to a house fire intent on saving the woman trapped inside.

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 tense scene unfolds as a terrified woman barricades her family at home.

A new cop's career may be over before it begins when a stop turns deadly.

SWAT is on the scene to temper a life-threatening domestic stand-off.

An SUV careens into a house, causing an earthshattering explosion.

Armed bank robbers are brazenly determined to avoid prison at any cost.

A machete-wielding madman leads police on a wild car chase through town.

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.