2.1 The case
record must contain documentation of the
observations that support a reported conclusion.
2.1 At a
minimum, the documentation must include
interpretable depictions or descriptions of the
agreement or disagreement of individual and/or class
characteristics to the extent that another qualified
firearm and toolmark examiner, without the benefit
of the evidence itself, can review the case record,
understand what was compared, and evaluate why the
examiner arrived at the reported conclusion.
2.3 The
supporting documentation of one comparison may be
used for additional evidence within a case provided
the agreement described or depicted is
representative of the additional comparison(s).
2.4 It must be
documented in the case record which items are being
depicted and/or described. The case record must
clearly describe or identify what items are
depicted.
2.5 Methods of
documentation including photography/imaging,
narrative descriptions, sketches, diagrams, charts,
worksheets, tabulation of consecutive matching
striae (CMS), or a combination of methods may serve
to satisfy the requirements of this standard. (NOTE:
The above mentioned documentation methods are not
sufficient for the determination or verification of
a conclusion.)
