How can we be sure they either do not know the codes, or have the knowledge to dismantle and reassemble?
Certain components would be damaged beyond repair, to the point where they would have to be shipped off to a place like Pantex would be my best guess. Keep in mind that these devices are far more engineered than what went off at Trinity so they use a minimum of fissile material. As a result, it takes a lot more precision to achieve criticality. Beyond that I can’t talk about it.