I was browsing the intel of the campaign and... wtf, in the project nova (If I remember well) intel was written something about the wunderwaffe program, and that an (I don't remember :roll: ) gave them a machine capable of time travel!
Now watch the NDT loading screen and...!
So I thought a theory that explain that:
Silence and zzzzzzzzzzzzzz can mean that they are sleeping=they are dead, so a survivor went into a american storage and used the teleporter to go to NDT, to prevent the 115 infection with the three tests subjects that survived the 115 exposure.
What do you think?
P.s: Sorry for my bad English.