Keep one copy off site another in fireproof box onsight, and to verify them before putting them away.
But Rogers’ rant gets truly bizarre later in the same video (after 1:23) where he explains what the security interest is:
We have one particular financial institution that clears, somewhere about $7 trillion dollars in global financial transactions every single day. Imagine if tomorrow that place gets in there and through an attack of which we know does exist, the potential does exist where the information is destroyed and manipulated, now you don’t know who owes what money, some of that may have lost transactions completely forever, imagine what that does to the economy, $7 trillion. Gone — right? Gone. It’s that serious
Such are those who pass legislation on national security and technology.