Max tells Mulder that he read Mulder's pseudonymous article in Omni Magazine about the Gulf Breeze sightings. Omni was a real magazine that covered both science and science fiction; it was published in a hard-copy edition between 1978 and 1995. The Gulf Breeze sightings were also "real." In late 1987, a Gulf Breeze, Florida, resident, Ed Walters, claimed that he had seen--and photographed--an alien spacecraft near his home. Although some flying saucer enthusiasts found the photographs convincing, they were revealed as staged hoaxes several years later when the new owners of Walters's old house found a model of a UFO identical to the one in the photos secreted in the house.
The ER doctor described the Deputy Sheriff's burns as "fifth and sixth degree." The burn scale stops at fourth degree, indicating that the patient has been burned down to the bone, and even the bone has been burnt; it would look like it had been pulled out of a campfire.
The trivia item below may give away important plot points.
Scully states that the drug "Mellaril" is used exclusively to treat schizophrenia. This is false. It has been used for chronic pain, and in particular for depression. But it is also used for ADHD, Bipolar Disorder among many others, and as many neurological disorders as psychological ones. Supposedly, this was used simply because the writers needed Skully to allude to Max being mentally unstable; but they just chose the wrong drug to be the indicator.