The system is redundant, and no single operator should be able to do what was done that day. The military bases went delta-5. Largest military port city, and China's looking to let the fire out of their dragon...
Never thought about it that way, but you are right, a system so vital and critical should never be left for 1 human to deal with, reminds me of missile systems where you need 2 keys and Passphrase's, did they ever resolved this? I'm guessing no.