In 2006, just out of flight school, I got the chance to help a single-pilot PC-12 owner by sitting right seat and manning his radios during an air rally around Northern Quebec. For a brand-new pilot, it felt like the opportunity of the summer. What I was not prepared for was how he operated. He blatantly disregarded some of the airspace restrictions along the route. And that is how I ended up watching an F-18 slide onto our wing. That is the interceptor, through our window, on the day the system came to find us. Nobody plans to meet a fighter. And here is the thing I understood only later: nothing about that day was a flying failure. The airplane was fine. The weather was fine. It was a planning failure, a briefing that never happened, restrictions treated as suggestions. The intercept was just the invoice arriving. That is the exact territory of the final Domain V session. The points in this part of the exam hide in the corners nobody studies, the same corners that got a PC-12 intercepted. Domain V, Part 3: OPS6 through OPS9, plus Part 139. Thursday, August 13 · 11AM ET · live in the community. This one is a drill day. The first two parts asked you to reason. This one asks you to know the numbers cold, and the exam over-tests exactly the topics your study guide skims: - The presidential TFR's two rings, and what actually lets you operate in the outer one. - eAPIS, and the sixty-minute clock that runs in both directions. - Who owns security in your department, and why "maximum posture at all times" is the wrong answer. - The SHELL model, the Swiss cheese, and the sterile cockpit question almost everyone gets wrong: cruise at 8,500 feet, the PIC asks for a coffee. Violation or legal? - Bottle to throttle, duty limits, scuba, and the oxygen altitudes that changed in the 2026 Guide. - Jet fuel fires, RACE, bonding versus grounding, and the OSHA clocks. - And Part 139, the airport certification rule the exam over-represents. Four certificate classes, the ARFF index, and the three-minute rule. You do not operate the airport, but you need to read it.