That's not how it works. The codes are on cardstock carried in a briefcase known as the nuclear football. The codes are pinched in by the people at the silo which is air gapped and require two keys turned at the same time to do the final activation.
“You can’t beat the us government with guns alone. You would need f-15s and nukes.”; Yes. Because the North Vietnamese and the Vietcong needed f-15s and nukes. Two words, Joe: unconventional warfare.