Expert Witness Services

William Henderson, FEDCAS President

William H. HendersonFEDCAS Founder & Principal Consultant

Expert witness services are provided by William H. Henderson.  He has been retained as an expert in the field of federal personnel security policy, standards, and procedures for civil cases filed in state and federal courts.  Expert witness services are charged at a rate of $250 an hour for research, writing, testimony, and travel time, plus actual and reasonable expenses.  If non-local travel is required, estimated travel expenses and travel time are payable in advance.  In most cases a three thousand dollar ($3,000) replenishable retainer is required.  One thousand dollars ($1,000) of the retainer is a non-refundable minimum fee.  A brief biography of Mr. Henderson is posted at  A complete curriculum vitae can be requested using our contact form.

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