FTA: ”Boom’s two test pilots were also onsite to verify that all aspects of the wing met their approval.”

I don’t know how well versed these pilots are in manufacturing this kind of stuff, but I would guess that’s mostly psychological. But yes, it’s their lives that are on the line. If this wing we’re to break or fall apart at supersonic speed, I guess they (or one of them, if this is a single-seater) are dead.