Let's help Bob here folks. He "sees" *involuntary* startle reflexes where
there exists no (zero) valid observable evidence for them. There is not
the slightest hint of an involuntary motion being carried out by anyone in
the limousine with the *possible* exception of Kellerman, who's movements
are difficult to detect with certainty, but upon hyper-analysis of a
second or so of blown up, digitized, and cleaned up 1960's 8 MM film,
*could* be possibly consistent with an involuntary startle.
Thus one has a choice:
1) Harmonize our understanding of the possible explanations for the
movements of Kellerman with the manifestly *voluntary* motions that the
other uninjured limo. passengers are making in reaction to the attack that
has now persisted for at least 85% of its accepted length. (I.e, the
*sensible* approach.)
2) Insist---without a shred of *valid* visual evidence-- that our
understanding of the other 3 non-injured passengers motions must somehow
comport with "involuntary" startle reactions, based on having concluded
that this is what Kellerman is manifesting. (The *Robert Harris*
approach.)
3) Come up with some kooky theory to explain how Roy Kellerman (alone) is
manifesting and involuntary startle while the other passenger are not.
(The *insane* approach.)
But Kudos to Bob! He has managed to find a multiplicity options, where
most mere mortals really see only one sensible one. :-)