Alan Wake's Story was a Changed World Event
The Federal Bureau of Control specializes in investigating, containing, and covering the occurrence of altered world events, or AWEs. These are basically moments when other dimensions creep into our own, with different supernatural results. The document "Bright Falls AWE" found in Control shows that the Bureau responded to the events of Alan Wake, but arrived after the events of the game. During Alan Wake, Sheriff Sarah Breaker asks Wake's literary agent, Barry Wheeler, to make some calls and give the code phrase "Night Springs." Apparently, it was Sarah's way of informing people close to the agency about what happened ̵
According to FBC, Cauldron Lake, where Dark Place lives in Alan Wake and the place from which Alan's power to write about reality comes from is a threshold. These are places where dimensions bleed together, and we see a few in control.
The documents state that the FBC has investigated Cauldron Lake more than once in the 1970s, and the years mentioned seem to coincide with other events. In Alan Wake, poet Thomas Zane discovered Darkness, the game's antagonist, in the 1970s and wrote the story that would lay the foundation for Alan's arrival in Bright Falls. More about Zane later.