They are summoned to a briefing at the
FBI office in Knoxville, Tennessee, by Special Agent in
Charge James Derringer. Derringer is a career FBI man
who participated in his first DG operation as a Marine
in Vietnam. Derringer is a model FBI supervisor except
for his belief that some things are better taken care
of outside the normal chain of command—in other
words, by Delta Green.

On a 21” TV set, a blurry black-and-white picture
appears of a young man approaching the gas station’s
counter, looking agitated. He says something with a
pained look on his face (there is no audio) and the
cashier stares back at him blankly.
The man lashesout and strikes the cashier on the side of the head
with his fist.
The cashier’s skull collapses and his head is torn
right off his shoulders by the force of the blow. The
head drops onto the counter as the headless corpse
staggers for a moment, blood gouting from the neck
stump. The young man takes a step back with a look
of shock as the cashier’s hands go up and twitch
spastically before the body collapses to the floor. The
young man then hits some keys on the cash register
until the drawer pops open. He grabs all the bills in
the register. He turns and runs offscreen, returning
moments later with a handful of pill bottles, and then
runs offscreen again, not to return.

Derringer goes over the facts:

• Spivey vanished eleven days ago from his parents’
  home in Groversville. He returned nine days ago,
  dazed and with no knowledge of what had happened.
  He was ill and in a great deal of pain.
  

• His parents took him to the doctor the next day.
  The doctor found only that Billy Ray was in inexplicable
  pain but had a remarkable appetite. He
  had no bowel movements and didn’t urinate.
  

• Seven days ago, Spivey went into a fit. His father
  attempted to hold him down and quiet him. Spivey
  punched his fist through his father’s chest. Distraught,
  Spivey fled down the road towards town.
  

• In Groversville, he robbed the Sinclair Gas & Go
  of $65 and several packages of aspirin. He took
  the cashier’s car and sped off down Highway
  135. The cashier said that Spivey had no gun but
  demolished the counter with his bare hands.
  

• Spivey fled to Alabama and Georgia. Those who
  encountered him said he was manic, with no real
  sense of what he was doing. He robbed gas of
  money, food, and painkillers.
  

• After the cashier in the videotape died in Alabama,
  the FBI took an interest in the case. Derringer
  got involved and realized there was something
  seriously wrong.
  

• At a roadblock in Georgia, an FBI agent and a
  state trooper shot Spivey four times after he bent
  the trooper’s riot gun in half. The four bullets
  were barely enough to drop him. He was taken in,
  drugged, and examined.
  

• Analysis showed that muscles in his arms and
  legs have been entirely replaced with a strange
  tissue that mimics human muscle but possesses
  non-human characteristics.
  

• Spivey possesses tremendous muscular strength,
  but his skeletal structure has not changed. While
  he is strong enough to pick up a car and throw
  it, his bones would break before he could
  hold it for long.
  

• Further examination found evidence of extensive
  surgery, revealed by scars all over his arms and
  legs. These scars are not visible to the naked eye,
  as the incisions seem to have been closed with
  the same non-human material as the replaced
  muscle tissue.