Defense Travel SystemCertifying Officers Legislation (COL) Training. a certificate of non-availability(CNA) MBR’s GTCC in this scenario grants them reimbursement for a charge they did not incur. Scenario 4 A traveler has been authorized full commercial Per … Access Document … Fetch DocAnnual Training (AT), ADT (Additional Duty Training) or IDTT. (GTCC) justification for your situation. […]

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