This is a pre-award announcement for a single-source contract modification to an existing FAA task order with Personnel Decisions Research Institutes, LLC (PDRI). The work involves preparing for, administering, and supporting an experimental pre-employment controller selection test at FAA facilities. The justification for the single-source award is PDRI's unique, established expertise with the specific test instrument and FAA operational requirements. This requirement will be awarded to PDRI and is not available for competition. The announcement is for informational purposes only and is not a solicitation.