TV Guide Discovery Channel Tuesday

Officers discover a hidden GPS tracker in a trailer; American citizens are pressed for answers when they accidentally arrive at the international border.

Following the men and women of America's Customs and Border Protection Agency as they patrol the U.S.-Mexico border for terrorists, drugs and illegal weapons.

Millions of dollars' worth of counterfeits are discovered; a woman is caught throwing drugs away; a stunning find is discovered hidden within a lowboy trailer.

A man returning from Mexico requires an emergency Narcan dose; a family serve as unlikely smugglers of firearms south of the border.

Host Forrest Galante investigates videos that capture bears breaking into cabins and homes, bypassing food and opting for booze and marijuana edibles.

Dustin and his team travel to Alaska in hopes of finding gold nuggets hidden deep beneath untamed creeks.

When the miners learn that a blizzard is headed their way, they decide to work faster and harder on the freezing Nugget Creek to maximize their gold haul.

Rick Ness recounts his early days in gold mining and the misadventures he had with Parker overcoming the obstacles he faced on and off the claim.

A typhoon brings monstrous waves and high winds to the west; Rick and Bob attempt to stitch a head wound in turbulent seas; John risks capsizing.

A knife incident occurs on the Northwestern; chaos ensues on the Confidence; The Wizard encounters a mechanical failure in rough seas.

Sig and Jake try a new fishing strategy while in treacherous waters; Rick and Sophia try a boat-to-boat transfer; the fleet mourns for fisherman Nick Mava.

Johnathan's plan to head for land is derailed when the Coast Guard boards the Time Bandit; Sig heads west to find a bigger biomass.

The team puts several car scenes used in Hollywood films to the test, featuring the cliff-top push, two-wheel wipeout and Corvette barrel roll.

The team takes on some common automotive clichés seen in Hollywood films, including driving through glass, plowing through traffic, and firing a RPG at a SUV.

Adam and Jamie explore the world of speed cameras and speed traps, following fast cars as they attempt to evade the cameras that are designed to slow them down.

Adam and Jamie recreate a motorcycle chase from "Indiana Jones and the Last Crusade" to find out whether it was physically possible.

Master detailer inventing mind-blowing cleaning techniques to transform forgotten barn finds and discards daily drivers into jaw-dropping, high-dollar machines.

AJ and Bryce fight for the top spot; Josh takes a reckless risk to rescue his season, endangering his life in a high-stakes bet; tensions and gossip rise.

The rivalry between AJ and Bryce intensifies; Josh stirs up drama; word gets around of AJ and Madi's breakup; Cole Hudson shows off his skills.

Bryce might be at the top, but Texas's big tire course isn't his strong suit; Megan seizes the opportunity to show off her big tire skills.

A miracle is needed for Josh to win; a race about speed threatens Bryce's top position; despite his personal issues, AJ tries to place his focus on the Mud Cup.

As the company relocates, a repeat client reaches out to request an off-road truck that can seat his family of 11; Joe's latest move enrages Ashley's family.

Amateur drivers challenge one another by presenting hand-made, motor-less vehicles, which are judged for their aesthetics, their speed and their road-holding.

A look at wild backyard builds, clumsy individuals and uncontrollable machinery.

Cameras roll as the unexpected occurs after hard work and perseverance.

A miracle is needed for Josh to win; a race about speed threatens Bryce's top position; despite his personal issues, AJ tries to place his focus on the Mud Cup.

As the company relocates, a repeat client reaches out to request an off-road truck that can seat his family of 11; Joe's latest move enrages Ashley's family.

Amateur drivers challenge one another by presenting hand-made, motor-less vehicles, which are judged for their aesthetics, their speed and their road-holding.

A look at wild backyard builds, clumsy individuals and uncontrollable machinery.

Cameras roll as the unexpected occurs after hard work and perseverance.

A hidden cave entrance below a lake could finally lead the team into the Keyhole Chamber; Chad navigates a deadly maze of flooded tunnels and makes a discovery.

Chad finds a way to the Keyhole Chamber while diving into the underwater passages; a mysterious piece of equipment is stolen from the ranch.