He grabbed his laptop and a fieldbus cable, then jogged across the yard, dodging a reversing yard dog. At the east wing’s main DDC panel, Marco plugged in. The SAIA PCD3 controller’s LEDs were blinking an irregular pattern—two fast, one slow. He’d seen that before. Not a hardware failure. A logic trap.
He grabbed the radio. “East wing is live. Send them in.” By midnight, all 53 refrigerated trailers were unloaded, cross-docked, and back on the road. The turkeys were safe. The hams were cooling in the Saia warehouse freezer. And the SAIA DDC hummed along in its panel, monitoring pressures, adjusting dampers, and tracking cycle counts. saia ddc
The yard manager’s voice crackled over the radio: “Marco, I have twelve reefers idling at the east wing. Dispatch says if we don’t move them in the next twenty minutes, we start paying detention fees by the minute.” He grabbed his laptop and a fieldbus cable,