Hawiian missle warning

[Keith&Co.]

Now, when it comes to the big booms there should be an essential hardware component--not merely some sort of lock, but something without which no possible action by the software can bypass. We do not want a Therac-25 incident with a missile!

Oh, there is.

There are three critical keys. One in the safe controlled by the weapons officer; one/tube under the captain's control; and one in a safe that no one onboard has the combination to.

 

[Loren Pechtel]

Now, when it comes to the big booms there should be an essential hardware component--not merely some sort of lock, but something without which no possible action by the software can bypass. We do not want a Therac-25 incident with a missile!

Oh, there is.

There are three critical keys. One in the safe controlled by the weapons officer; one/tube under the captain's control; and one in a safe that no one onboard has the combination to.

Keys are a lock. I'm talking about an actual physical component.

 

[Keith&Co.]

Now, when it comes to the big booms there should be an essential hardware component--not merely some sort of lock, but something without which no possible action by the software can bypass. We do not want a Therac-25 incident with a missile!

Oh, there is.

There are three critical keys. One in the safe controlled by the weapons officer; one/tube under the captain's control; and one in a safe that no one onboard has the combination to.

Keys are a lock. I'm talking about an actual physical component.

These keys are necessary to turn signal switches that are physical components of the launch circuit. Not just locking a cover over the panel with the switch.