Discovery Channel HD

When a freak storm unleashes a tornado and a year's worth of rainfall on the city of Valencia, Spain, eyewitnesses capture catastrophic flooding in the urban center; bridges buckle, cars are swept away and residents fight for their lives.

When Hurricane Harvey hit Texas with 130 mph winds and record-breaking rain, cameras captured catastrophic flooding as entire neighborhoods vanished, forcing civilians to risk their own lives to save others in one of the costliest disasters in US history.

Deep in "The Fork," Russell rappels a 700-foot cliff to follow a heat signature; Mireya and Biko track signs outside their base camp; Bryce hears new information about strange vocalizations and discovers that someone has visited his command center.

An unexpected storm tears through Nugget Creek, putting dive sites and dredges in severe jeopardy; Dustin doubles down on his airboat gamble; mounting pressure causes a potentially season-ending explosion.

Ken and Danny track down a vintage Stearman biplane; Mike helps a pilot retrieve his stolen skywriting plane; Kevin and Heather pose as tourists.

Ken and Danny try to repossess two planes from a feared criminal; Mike needs to get a plane that is being stripped; Kevin cozies up to a debtor.

Mike and his wife go undercover to repo a boat; Ken and Danny, with help from friends, pull off a simultaneous triple repo; Kevin tries to swipe a fleet of Cessnas.

Ken and Danny repossess a tour bus; Kevin faces armed guards on a nighttime repo; Mike is caught in a gun-smuggling operation.

Mike goes underwater to seize a seaplane; Ken and Danny chase a debtor who continues to fool them; Kevin is recognized at an airport.

At the Brownsville, Texas, point of entry, officers encounter drug trafficking, fraudulent documents and illegal merchandise; authorities seize $7 million worth of marijuana hidden inside a rolled carpet during a routine cargo inspection.

Officers question a man traveling with two children that aren't his; a traveler is caught smuggling cash; drugs are found concealed in a flatbed truck; a drunken man is restrained in Progreso, Mexico.

Officers discover firearms that may be intended for a Mexican drug lord; a load of Fentanyl hidden in an ice cream freezer; a truck driver transporting puppies is under scrutiny; a wanted woman is detained in Brownsville.

Meth is found inside the walls of a trailer; brothers are caught smuggling prescription medication; illicit Mexican delicacies are confiscated at the border.

A woman is investigated for smuggling a baby; officers find packets filled with cocaine, meth, and heroin in carrots -- indicating gang involvement; two young women are caught smuggling pills; a wanted man triggers an alert.

Cartels hope CBP won't inspect happy families, but officers know not to fall for that smuggling trick. Due to avian flu, live chickens can't be brought into the U.S. A family is forced to choose: go home to save their pet or surrender the bird to CBP.

Over-capacity and on the brink, Louisiana's Washington Parish Jail is spiraling into chaos; the new sheriff struggles to bring stability and control while facing the mistakes of the past.

Caddo Parish Correctional Center is struggling with a staffing shortage, the inmates outnumber the deputies by 180 to one; to ensure the safety of both inmates and staff alike, the Emergency Response Team springs into action.

Inside Butler County Jail, a six-term sheriff and his seasoned staff confront an opioid crisis; as drugs flood the facility, officers work to dismantle the supply ring and maintain order.

At critical junctions along the U.S./Mexico trade arteries, hidden goods worth billions of dollars cross the southern border. Drug seizures at that border are at an all-time high as the cartels attempt smuggling both large and small loads of narcotics.

After nearly two decades of economic decline and a surge in methamphetamine use, Wood County, Wisconsin opened a new $93 million jail, where staff face mounting pressure to help a community searching for a way forward.

As an opioid epidemic grips the county, a law-and-order sheriff uses rehabilitation to help inmates break the cycle of addiction while officers work around the clock to maintain safety, security and order inside one of New York's busiest jails.

A traveler is caught with blades for cockfighting, a cartel-run blood sport; every year, Mexico grows millions of dollars of flowers for the U.S., but cartels are taking advantage of the influx of shipments during major holidays to stash something extra.

At critical junctions along the U.S./Mexico trade arteries, hidden goods worth billions of dollars cross the southern border. Drug seizures at that border are at an all-time high as the cartels attempt smuggling both large and small loads of narcotics.