The government issued a justification for an exception to fair opportunity to increase the ceiling on an existing task order supporting the C5ISR Center and its customer organizations. The task order provides professional services delivering technology and countermeasures to the warfighter, including Commercial Based Technology Analysis, program management, logistics, training, engineering, and technical support. The work was originally competed through fair opportunity under the GSA ASTRO Support Pool multiple award contract. The ceiling increase is justified because the scope, nature, and type of work remain identical to the original competition, while mission-validated requirements have exceeded original estimates due to a dynamic and rapidly evolving threat environment.