In New Mexico, a car chase ends dramatically with lasting consequences for a lieutenant and a lone officer must keep her cool to safely detain a homicide suspect.

Police chase two armed men and search for a missing five-year-old boy.

Officers find a car in a ditch, sparking a hunt for the missing driver.

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.

Officers respond to a collision, chase a suspect, and hunt an armed man.

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

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.

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 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.

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

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

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 chase a carjacking suspect and save victims of a mass stabbing.

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

In Ohio, Police fight to save the life of a woman held at knifepoint by a violent criminal.

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 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.

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.

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.

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.

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.

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 suspect sets fire to his home, and officers battle deadly floods.

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

Police hunt a shooter, a car targets runners, and cops make a fire rescue.

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

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.

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 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.

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

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.

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

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.

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 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 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 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.

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.

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.

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

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

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, 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.

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

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.

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.

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.

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.

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