In the very first episode of Breaking Bad (S1E1 Pilot), Walt and Jesse drive the RV out into the middle of nowhere, New Mexico. They are many miles from civilization. The closest sign of human life is a small farm two miles away.
During the events of the episode, there are gunshots and a brush fire near the RV. Soon after, we hear sirens in the distance (this is actually where the episode begins, three weeks later).
This was a remote location and there was a very short time between smoke and gunshots being discernible and the sirens being heard. How did emergency vehicles show up so quickly?
Even if someone at the distant farm saw smoke and called 911, how could anyone respond so quickly? Was this some kind of setup by the bad guys in the episode?