This isn't a nightmare. The doors were an almost common phenomenon. People seeing the same dream and even seeing each other. People on the other side of the world met each other in their dreams. Government reaction? Well, their initial plan was to kidnap these people. Experiment with them. However, it grew at an exponential rate. Everyone was seeing these doors. Soon you couldn't just pluck someone out of their homes or from the street. Still, those of us who were curious about this phenomenon found it to be a lot more sinister than most believed.

https://www.thepennedsleuth.com/blog/doors