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.

In Wisconsin, Rhinelander PD attempts to foil a murder for hire by going undecover and meeting the suspect as a hitman. In Colorado, law enforcement from two counties tries to stop a runaway semi-truck before it devastates the little town of Brush.

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

Police chase a known criminal through the dangerous Ocala National Forest; in Michigan, a spree of home invasions escalates into a three-day manhunt.

Police hunt a murder suspect. Officers try to save a couple in an icy lake.

In Utah, a wanted felon, who has threatened his family's life, is on the run. As officers close in on him, he makes a desperate move, breaking into a family's home and taking them hostage. Officers work through the night to secure their release.

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.

Police race to an armed robbery and face a hail of shotgun pellets; a gas explosion lifts the roof off an apartment building, engulfing officers in a fireball; in Georgia, a man fights for his life in a wrecked SUV.

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

In Georgia, two police officers respond to a domestic disturbance that ends in tragedy; in New York, a house fire turns into a murder investigation; in Oklahoma, the search for a known sex offender builds to a shocking conclusion.

Officers catch burglars in the act, and a house fire traps a woman inside.

In Florida, a suspect's car going 45 miles per hour, drags a Pembroke Pines PD officer behind it. In Georgia, a domestic dispute turns into a shootout, leaving one officer fighting for his life. In Michigan, a routine traffic stop turns into a car chase.

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.

Officers confront a knife-wielding suspect. In Florida, a man who flees into the woods is outsmarted by a K9 Officer. In Indiana, a gunman wages war on police, caught on surveillance cameras, until SWAT closes in.

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

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

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

Information leads undercover FBI officers to a plot to murder lawmakers. A Florida man throws himself into alligator-infested waters to evade arrest, and in Phoenix, fire threatens to consume a driver trapped in a wrecked car.

In Ohio, police try to rescue a woman trapped in a sinking car which puts an officer's life in danger. In Florida, a high-speed pursuit ends in a swamp, where the suspect shoots at police and escapes. Specialist units set out to locate the criminal.

Arkansas police stop a knifeman enraged over a midnight pot roast; in Delray Beach, Fla., officers must rescue two children teetering on a ledge with their mother who is high on drugs; in Utah, a trespasser attacks an officer with his own baton.

In Texas, police set a trap for a would-be killer; a high-speed chase leads police into a Florida swamp, where a police dog locates the suspect who now needs to be rescued.

Police pursue a father & son. An officer joins the chase and his life changes when he comes face to face with the armed suspects. In Ohio, a man threatens himself and his family. An officer negotiates over a video call, leading to a stand-off.

In Arizona, a detective leads his heavily armed team on a search warrant but ends up in the firing line himself; in Kentucky, a routine traffic stop turns violent as the suspect makes a risky getaway; in New York, a knife-wielding man draws police into a dangerous foot chase.

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.

Arkansas officers are pinned down by a deadly gunman for four hours; after a high-speed chase of a stolen pick-up, Oklahoma City officers fear an ambush when a suspect bails; a naked driver waving a gun leads Wisconsin police to a dangerous standoff.

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

A man shoots a cop at a traffic stop, and police hunt armed suspects.

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

In Wisconsin, a suspected hit-and-run takes a dangerous turn when a witness opens fire leaving two officers down. In Georgia, a mother and her children hide in a closet after a gang leader barricades himself in their apartment.

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

In Florida, when a thief goes on the run, he draws officers and their K-9 into a deadly ambush. In Wisconsin, a traffic stop becomes a manhunt. An officer must ram a suspect head-on to get him off the road, putting her own life on the line.

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 Georgia, police hunt for two suspects who are responsible for a string of armed robberies; in Texas, an undercover cop foils a murder-for-hire plot; in Oklahoma, a known felon tries to force an officer off the road, stopping at nothing to escape arrest.

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.

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

In New Mexico, a carjacker shoots an officer before going on the run, leading officers into a deadly confrontation. In Oklahoma, police respond to a domestic violence call to find a mysteriously empty house. Can they hunt down this dangerous suspect?

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

In California, an argument in a bar leads to a deadly hostage situation. In New Mexico, a shoplifter unexpectedly fires upon an officer before going on the run. In Wisconsin, a suspect disappears into the frozen wilderness after flipping his car.

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.

A shooter with an AR-15 opens fire on 300 clubbers in Orlando, Fla.; hiding in the bathroom, he takes multiple hostages; it's a race against time to save their lives; in Washington, a thief steals a shotgun from a Walmart, and K9 officers track him.

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

In New Mexico, a desperate mother clings to her car when a carjacker steals it with her babies inside; just before dawn in Arizona, a SWAT team must locate an individual spotted inside a pawn shop packed with guns.

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

In Albuquerque NM, a man with an AK-47 steals a police car and fires at police during a 16-mile citywide chase; in Iowa, a home invasion call escalates into something far more terrifying.

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.

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

In Wisconsin, a terrified woman wakes up in her car and finds it's been stolen by a thief, sparking a high-speed police pursuit; a home invasion in Utah turns into a fire rescue, when a man sets the house alight with the residents still inside.

In Vermont, a dad wielding an excavator attacks officers to stop them from arresting his son. In Wisconsin, a police pastor on a ride-along gets caught up in a high-speed chase. In an Indiana motel, a wanted man opens fire on police.

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.

In Tennessee, officers arrive at an office where two women and a child are held hostage by a gunman; for 14 hours, officers attempt to secure their release; in Illinois, officers join a multi-state search for an armed bank robber.

An Arizona mother triggers a desperate search for her son, who is armed and suicidal; an Ohio officer fights for his life when a suspect overpowers him; a Wisconsin man shoots his co-workers and police must find him to stop the threat.

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