Specifications include, but are not limited to: A. The Contractor shall provide unarmed security guard services to also include management, supervision, and leadership of Security Officers at the various locations (Posts) at IAD. Security services shall be performed in a manner that will ensure the safety and well-being of the public and airport personnel in accordance with Transportation Security Administration regulations and directives and support the Airport’s Security Plan. The Contractor shall provide unarmed Security Officers at various interior and exterior posts and for the durations prescribed herein. B. Additional posts may be established and / or existing posts may be modified or eliminated at the sole discretion of the Airports Authority. Post hours may be increased or decreased as required to meet changing needs of the Airports Authority. The Airports Authority will strive, but shall not be obligated, to provide 30 calendar days advance notice of any new post establishment or elimination. C. Due to the sudden and dynamic nature of security at the Airport, the Contractor may be required to occasionally provide a number of qualified temporary Security Officers, with little or no advanced notice. These assignments are supplemental services and shall be made in accordance with the SECTION V – SUPPLEMENTAL SERVICES.