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by blorsh 3199 days ago
This is exactly what you'd do in a Concorde, U-2, SR-71, F-15, or F-22. All of these can get to the required FL600, at 60000 feet.

The F-15 and F-22 have an extra bonus. They can climb straight up through the eye. The U-2 could probably manage a spiral climb within the eye.