Frank's voice crackled: "Pump just kicked on. River's safe, kid."
She radioed the plant operator: "Frank, holding tank levels?"
Elena exhaled. She watched the dosing pump tag in the data monitor— AI_001 (pH) climbing from 6.8 to 7.1, DO_003 (pump enable) switching from FALSE to TRUE.
Green checkmark.
She had the fix—a patched ladder logic file on her company laptop. The problem wasn't the code. The problem was getting the software to download it.
Elena walked to the panel, flipped the circuit breaker off for ten seconds, then on. The PLC's "RUN" LED flashed amber, then steady green. She returned to the laptop, clicked again.
