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Up for sale is a highly collectible, authentic USAF B-21 Raider Envelope Expansion Team morale patch. This insignia belongs to the elite 420th Flight Test Squadron (420 FLTS) based out of Edwards Air Force Base, California, which is actively tasked with the developmental flight testing of the nation’s newest stealth bomber. This piece has an incredible pedigree: I personally obtained this patch directly during a B-21 flight test. It is a true piece of modern aviation history, making it an incredibly rare find for military patch collectors and stealth aircraft enthusiasts alike. Design Features & Symbolism: The Mascot: Features a multi-headed “hellhound” (Cerberus) aggressively pulling a skeleton in a cart-a direct nod to the squadron’s historic B-2 Spirit test heritage. The Motto: Displays the tongue-in-cheek phrase “Run Before You Walk”, playfully poking fun at the highly accelerated and intense development timeline of the B-21 Raider program. The Aircraft: Features the distinct, clean flying-wing silhouette of the B-21 Raider stealth bomber flying overhead in a stark white contrast.