Post by bigdog
From Houston Street To The Overpasshttp://www.maryferrell.org/mffweb/archive/viewer/showDoc.do?absPageId...
Their analysis is flawed on several levels. First of all, it is
disingenuous to say the HSCA skepticism was largely based on the JFK's
rearward movement in the Z-film when it was the conclusion of the HSCA
that the shot from the GK missed. It is also more than little ridiculous
Their decision on how to match the shots on the tape to the Zapruder frame
was based on their faulty understanding of the medical evidence which led
them to think the head shot came from behind. They overlooked the entrance
hole in the frontal bone and made up an imaginary exit wound on the
Post by bigdog
to say in one sentence that the WC's conclusion of 3 shots was based
largely on the presence of three shells in the SN and then say that the WC
did not state specifically that all three shots were fired from the SN.
Did they really need to say that. Can't a reasonable person conclude that
if the primary evidence of three shots were the spent shells in the SN,
the WC believed all three shots came from the SN?
And the acoustical evidence proves that exactly three shots were fired
The HSCA's acoustic work was seriously flawed
Conclusions regarding the JFK assassinationThe HSCA concluded in its
1979 report that:
1.Lee Harvey Oswald fired three shots at President John F. Kennedy.
The second and third shots he fired struck the President. The third
shot he fired killed the President.
2.Scientific acoustical evidence establishes a high probability that
at least two gunmen fired at President John F. Kennedy.
Criticisms and further researchThe sole acoustic evidence relied on by
the committee's experts to support its theory of a fourth gunshot (and
a gunman on the grassy knoll) in the JFK assassination, was a
Dictabelt recording alleged to be from a stuck transmitter on a police
motorcycle in Dealey Plaza during the assassination. After the
committee finished its work, however, an amateur researcher listened
to the recording and discovered faint crosstalk of transmissions from
another police radio channel known to have been made a minute after
the assassination. This was supported by the National Academy of
Further, the Dallas motorcycle policeman thought to be the source of
the sounds followed the motorcade to the hospital at high speed, his
siren blaring, immediately after the shots were fired. Yet the
recording is of a mostly idling motorcycle, eventually determined to
have been at JFK's destination, the Trade Mart, miles from Dealey
In 2001, this criticism of the Committee's acoustic evidence was
rebutted in a Science and Justice article written by D.B. Thomas, a
government scientist and JFK assassination researcher. He concluded
the HSCA finding of a second shooter was correct and that the NAS
panel's study was flawed. Thomas surmises that the Dictaphone needle
jumped and created an overdub on Channel One.
The 1981 Committee on Ballistic Acoustics was charged with reviewing
the HSCA’s acoustic evidence , they concluded that the acoustic
evidence of conspiracy was invalid. Donald Thomas who reportedly
performed the first independent peer review of the HSCA’s work and who
people think was “an expert on acoustic testing” never read Thomas’
own report on his work with the acoustic evidence in which he
acknowledges that "he is not an acoustic expert." 
In 2003, computer animator Dale Myers used various films from the day
of the shooting to plot the locations and speeds of the motorcycle
police officers during the assassination, and concluded that no police
motorcycles were anywhere near the precise microphone location on
Houston Street required by the Committee's acoustic experts. Myers'
study confirmed the same misgivings voiced by HSCA photographic
consultant Richard E. Sprague in 1978.
A majority of witnesses who testified on the source of the shots said
they came from the direction of the Depository. However, many
witnesses thought the shots came from the direction of the Knoll. Only
five witnesses, from a total of over one hundred, thought the shots
came from two directions simultaneously.
The Mitrokhin Archive--The KGB in Europe and the West, by Christopher
Andrew and Vasili Mitrokhin, documents extensive manipulation by the
KGB in creating and fostering conspiracy theories regarding the
Kennedy assassination. The origin of the infamous forged letter,
purported to be from Oswald to E. Howard Hunt, remained inconclusive
in the final opinion of the Committee, leaving, in the words of
Hunt, "an article of faith that I had some role in the Kennedy
See also: Dictabelt evidence relating to the assassination of John F.
References1.^ "1. The Problem of Secrecy and the Solution of the JFK
Act". Final Report of the Assassination Records Review Board.
September 1998. http://www.fas.org/sgp/advisory/arrb98/part03.htm.
2.^ G. Robert Blakey's 2003 Addendum to this Interview: from PBS's
3.^ Study Backs Theory of 'Grassy Knoll' from the Washington Post
4.^ Dr. Donald B. Thomas, “Hear No Evil : The Acoustical Evidence in
the Kennedy Assassination,” November 17, 2001, p.1
5.^ "Epipolar Geometric Analysis of Amateur Films Related to Acoustics
Evidence in the John F. Kennedy Assassination". Jfkfiles.com.
2003-11-20. http://www.jfkfiles.com/jfk/html/acoustics.htm. Retrieved
6.^ "Dealy Plaza Earwitnesses". Mcadams.posc.mu.edu. 2006-04-24.
http://mcadams.posc.mu.edu/shots.htm. Retrieved 2010-09-17.
7.^ The Mitrokhin Archive--The KGB in Europe and the West, Pp. 293-299
8.^ The Mitrokhin Archive--The KGB in Europe and the West, Page 299
9.^ [Mark Lane, Plausible Denial, Page 187]
National Academy of Sciences (NAS)
Report of the Committee on
In his manuscript(2) on "The Kennedy Assassination Tapes,"
http://www.jfk-online.com/bowles.html Captain James Bowles proposes
the hypothesis that the motorcycle carrying the open microphone was
not part of the motorcade that passed through Dealey Plaza but was
near the police command post at the Trade Mart at the time of the
assassination. He supports this hypothesis by a subjective assessment
of the motorcycle engine sounds (both during the motorcade and
subsequent to the assassination shots), the absence of crowd noises on
Channel I (which are clear on Channel II), the puzzling long-delayed
timing of the siren sounds, the voice broadcasts, interviews with
police officers, and the fact that all motorcycles in the motorcade
were supposed to be tuned to Channel II, not Channel I. The questions
raised by Bowles and by others pose serious doubts about the location
of the open microphone in Dealey Plaza, a necessary requirement for
the BRSW conclusion.
REPORT OF THE
COMMITTEE ON BALLISTIC ACOUSTICS
COMMISION ON PHYSICAL SCIENCES,
MATHEMATICS, AND RESOURCES
NATIONAL RESEARCH COUNCIL
NATIONAL ACADEMY PRESS
Washington, DC 1982
III. EVALUATION OF THE BRSW AND WA METHODOLOGIES AND CONCLUSIONS
Setting the Stage
Reference to Time and Recordings
Technical Reference to Radios and Recorders
Critique of the Committee Report
What Did Happen in Dealey Plaza
Dealey Plaza and the Assassination
Defense of the Rebuttal
Conclusion and Summation
Time Discrepancy in 12:30 Time-Check on Channel II
Fixing the Time the Shots Were Fired
Comparison of Shooting Times
Reconstruction and Progression of Motorcade Trip to Parkland Hospital
Time and Position Confirmation Through Officer Working Beat 38
The Sound of Sirens on Channel I
The Motorcycle with the Stuck Microphone
Comparison of Cross-Channel Messages
Transcripts of Dallas Police Department Radio Communications
End Notes Commentary - Channel I
End Notes Commentary - Channel II