[cynwoody]

A novel idea is hatched to use a commercial airliner to transport the device without any alarm or detection of the bomb. What could be next? Having served it's usefulness the 777 would be melted down and all traces of evidence disposed of.

Why would the 777 need to be melted down, given it would be vaporized in the process of delivering the weapon?

Of course, first you'd need to rescue the 777 from Davey Jones's locker, South Indian Ocean District.

[7thOF7th]

The plane can’t be used to deliver anything. It would be shot down well before it reached any target. Governments are on the look out for it. The bomb is untraceable and that is the threat. As long as it is shielded well it can be deployed later using conventional delivery methods.