they are fake people. the secret society used their profile to communicate. They would also be "Reassigned" if caught. But they really do not exist…..
there is a lot of money to be made with fake people (and soldiers) on your pay roll.
When it comes to planning, you want to have every aspect covered as best you can. The "tenth man rule" always has someone play the part of contrarian no matter how solid your plan looks to make it even more effective.
A fail-safe in engineering is a design feature or practice that in the event of a specific type of failure, inherently responds in a way that will cause no or minimal harm to other equipment, the environment or to people.
Kursk was an Oscar-II class nuclear-powered cruise-missile submarine of the Russian Navy. On 12 August 2000, K-141 Kursk was lost when it sank in the Barents Sea, killing all 118 personnel on board.