[Oshkalaboomboom]

It’s either that or leave classified cargo where any munchkin can recover it.
It’s a lot less challenging than picking up a submarine.

You think so? The plane is sitting at over twice the crush depth of a modern submarine, which means they would have to deploy a sumersible, a salvage ship and all of the associated support personnel. It's not cheap and not something anyone could do in secret.

[null and void]

A little hyperbole. Still, Russia or China might be able to do it. And depending on the cargo, they might be motivated enough to try.

[Sequoyah101]

Not easy to do but very doable. The offshore oil business does this kind of thing at 10,000. It isn’t routine but nobody says, “That’s nuts.” They just do it.