The United States Air Force came into existence in 1947. The distinctive flag background color of the Air Force was established in 1951. The flag background is a special shade known as Air Force blue. The central shield has a stylized thunderbolt symbol of the kind used in the Roman Empire. The blue shield appears over white clouds known in heraldry as nebuly. The ring of 13 stars refers to the original states of the nation. A bald eagle, the national bird, stands at the top with its wings spread. Behind its head is an area of clouds similar to those appearing in the coat of arms of the United States. This flag is 100% Made in the USA to Official Specifications. 
 
Craftsmanship, quality, durability, and beauty is second to none with Valley Forge polyester flags. The dyes are steam heatset activated to lock the color into the fabric. Expertly printed and sewn with heavy duty polyester. The extremely durable and tough fabric, designed for the harshest climates, flies in light breezes and blocks damaging UV rays. Features strong duck canvas heading and two large brass grommets. Strong, heavy-duty, thick, all weather polyester fabric is stitched together to outlast the toughest winds and environments. Manufactured domestically by Valley Forge Flag, since 1882, with facilities located in Pennsylvania, South Carolina, and Alabama.