[CapricornNoble]

I don't have a link handy, but I recall seeing on YT a clip of Luttrell basically outright stating that the Navy "handed him the book pre-written" in an interview.

[HaZeust]

I'd get to steppin' and find it. Compelling statements need compelling sources.

[harambae]

Not OP, but here:

https://youtu.be/yZ6mgltPclk

And the other Valhalla VFT one, and the Team House podcast, and just all over the place…