The following text is transcribed from Bunker Schematic Fragment 3
[faded handwriting in the margins of a technical drawing]
...just a single piece of wiring will be enough to close the mechanical circuit. It'll fire the charges on its own with a stored charge from the back up battery.
Just make sure you get everything out of there once it's triggered - there's no going back.
Wyatt knows it's a flaw in his countermeasures design, but as long as we keep it under our hats it shouldn't be a problem.
And as for Wyatt, we're going to sort out our business next week. The four of us. That should be the end of it.