Chad Zepp

Chad Zepp is the second member of Jack Twist’s robbery team, a concealed field operative whose work helps make the Guardmaster armored-car heist succeed. He does not lead the assault or take charge of the lock, but his radio jamming and close technical collaboration with Jack and Branch Pollard make the operation’s carefully timed sequence possible. His role is defined by coordination: he helps isolate the truck, then helps open the barrier protecting its cargo.

Position in the Robbery Team

On the cloudy winter night of the robbery, Zepp lies in a snowdrift across the road from Jack, at the foot of a knoll. Like Jack, he wears white camouflage, blending into the snow-covered landscape. Branch Pollard occupies a third position halfway down the knoll, armed with a Heckler & Koch HK91 rifle. The three men are arranged around the road rather than gathered together: concealment and separated positions allow the team to act from several points when the armored truck approaches.

That placement reflects the larger operation’s reliance on preparation. The truck comes toward the knoll through fog, and the men wait in the fields beside the county lane. Zepp is not described as the team’s planner or commander; instead, the scene gives him a precise supporting function within the formation. His concealment matters because the robbery depends on preventing the Guardmaster crew from summoning help while the other members move into position.

Cutting Off the Radio

After Pollard fires and the truck begins to slide on the ice, Jack runs into the roadway and stops it. Inside the vehicle, one of the crewmen speaks excitedly into a radio handset, apparently trying to call for assistance. Zepp, still concealed in the snow north of the road, has already switched on a battery-powered transmitter. It jams the transport’s radio frequency with shrill electronic static, making the guard’s call futile.

The jamming is an essential part of the assault rather than an incidental technical trick. The truck has been stopped, but the robbery team still needs time to control its crew and reach the cargo compartment. By disabling the radio at the moment the guard tries to use it, Zepp helps prevent the stopped vehicle from becoming a means of alerting others. His action complements Pollard’s rifle shot and Jack’s confrontation in the headlights: each man’s task addresses a different part of the immediate danger.

The scene also shows that the team has planned for isolation beyond Zepp’s transmitter. Hart and Dodd have blocked both ends of the road with repainted vans fitted with Department of Highway signs, turning away traffic under the pretense of a tanker-truck accident. Zepp’s jamming therefore belongs to a layered scheme: the crew cannot effectively call out, and passing motorists are kept from interrupting the operation. The robbery’s apparent precision comes from these separate measures working together.

Working the Cargo Lock

Once the crewmen have been subdued and shackled, Zepp joins Jack and Pollard at the rear of the truck. He is already there when they arrive, using a battery-powered light fixed to the vehicle by a magnet as he unscrews the faceplate covering the cargo-door lock. The team has brought explosives, but they avoid using them as a first resort because a blast could fuse the lock pins and seal the doors more securely. They choose instead to examine the electronic mechanism.

The lock is a modern system operated through a ten-button keypad. Its three-number code changes every morning, and only the driver knows it. Trying every possible sequence by hand would take at least an hour and a quarter, far too long for the exposed team. Removing the faceplate gives Zepp and his partners access to part of the mechanism behind the buttons, where a specialized electronic tool can do what brute force or guesswork cannot.

The device is SLICKS, a battery-powered computer intended for military or intelligence use and unavailable to the public. Jack has acquired it through a black-market arms dealer, and Zepp handles it at the truck while the others work beside him. Jack tests the exposed contacts with a probe; when he touches the point behind button 4, the display registers current. That reading gives the team a useful piece of information about the code, but it does not open the lock by itself.

Zepp holds the SLICKS upright as Jack uses its tap-wand and Pollard works the small programming board. When the display confirms that system control has been established, the computer can send commands directly to the chip controlling the lock. Pollard directs it to test combinations using 4 as the known middle digit. The correct sequence, 545, is found in nine seconds. The lock bolts retract together, and the cargo doors can be opened.

Contribution and Contrast

Zepp’s contribution spans two distinct stages of the heist: first, he blocks the crew’s radio call; later, he helps operate the equipment that defeats the cargo lock. In both, his work is collaborative and practical. He does not independently solve the lock or control the whole robbery. Instead, he keeps the device steady while Jack handles the probe and Pollard enters instructions, making the success depend on their different tasks fitting together.

Only four minutes have passed since the shot that blew out the truck’s right front tire when the lock opens. The quick result contrasts with the hour and a quarter that manual attempts might have required, while also validating the team’s decision not to risk explosives. Zepp slings the SLICKS over his shoulder again as Pollard opens the rear doors. The money is within reach, and Zepp laughs with delight. Jack, by contrast, still feels empty and cold. The scene does not explain Zepp’s reaction beyond that visible excitement, but the contrast gives his role a clear endpoint: he has helped turn a dangerous, carefully timed plan into a successful opening of the armored truck, even as the reward affects Jack differently.