Air Force symbol, blue chrome. The Air Force Symbol is a registered trademark (No. 2,767,190) of the USAF. Permission to use it for commercial use and advertising (free or paid) is required. The use of this trademark for commercial purposes, including reproduction on merchandise, is expressly prohibited unless the producer has a fully executed license agreement with the Air Force. Use is governed by the terms of the agreement. Click here to download the licensing application. For more information contact the Air Force Trademark Licensing office at 210.395.1787 or email afpaa.hq.tl@us.af.mil. For restrictions on use of Air Force Symbol visit here.