He listened without interrupting while she explained the pattern. At sixty-two, Thorne had a narrow face, close silver hair, and the habit of keeping his hands folded when other people were speaking. He wore his rank without theatricality. Danielle suspected that the most frightening thing about him, to someone trying to bluff, was how little he needed to say.
"Do you believe the officer is involved?" he asked when she finished.
"I believe he has access and opportunity. I have not established motive, or ruled out misuse of his identifiers. Captain Shaw's reports concern me. But I won't call either man a suspect in a criminal filing until I can support it."
"Then what do you need?"
"An authorized examination of the meter equipment, provider records, and station video. I want to arrive before the next scheduled Army fueling movement so we can establish the system's condition. If someone has tampered with the controller, I'd rather find it before another transaction is processed."
Thorne looked toward the window. Several soldiers were inspecting a cargo truck in the yard below. Their movements were ordinary and coordinated, the work of people who expected the machines in their care to function when needed.
"I'm traveling with the logistics convoy on Friday," he said. "That route passes the station. I can observe the readiness demonstration and meet with your team there, but I do not want my presence to replace proper investigative procedure."
"It won't, General. I've already coordinated with our counsel and the fuel contractor."
"Good. If this is fraud, follow it wherever the evidence leads. If it's a mistake, document the mistake just as thoroughly."
It was the most useful order he could have given her.
Friday arrived with a pale sky and wind that carried the smell of wet leaves. Danielle drove an unmarked, government-owned dark SUV fitted for field investigations. The vehicle was expensive because its electronics, secure communications, protective equipment, and recording systems were expensive. Its appearance did not prove anything about the person operating it, a fact she assumed most law-enforcement officers understood.
She wore dark jeans, low black boots, a navy blazer, and a pale blue shirt without a visible insignia. She had chosen civilian clothing because she wanted to observe the station before announcing the operation to everyone present. Her credential wallet rested inside the left side of the blazer. A work phone was secured on her belt. A body-worn audio recorder, activated according to the operation's evidence plan, would document her own interactions. The SUV's exterior cameras were ready to record if she transmitted an incident alert.
At 8:07 a.m., she turned beneath the station canopy. Pump six stood at the far end of the diesel row, beside a steel cabinet with a utility lock and a new-looking orange seal. A white pickup was refueling at pump two. An older man was carrying a paper cup toward a sedan. Nothing appeared exceptional until Danielle saw the marked patrol vehicle positioned on the far side of the service island.