The Department of the Navy requires a custom-manufactured, aviation-grade United States Flag to set the tone for the opening of the International Aerial Review (IAR) in commemoration of the Nations 25... The Department of the Navy requires a custom-manufactured, aviation-grade United States Flag to set the tone for the opening of the International Aerial Review (IAR) in commemoration of the Nations 250th birthday. This flag will be the largest known flag to fly over New York City.