"Driva" turned to "Arvestian" and they whispered to each other. Whatever is going on there, I need a security for myself. That means, there should be a swich that only I can swich off. Or on, to detonate it. Ok, will be done. I hope that only we know the plans. We do. They only know what is inside, but only we know how it all works. That's why we became engineers and the others are... pilots, soldiers or whatever. They slowly walked away and countinued the work at the real bomb.