A CV-22 Blade Electrical System Trainer rests on a work bench at RAF Mildenhall, England, July 26, 2019. Technical Sergeant Christopher Giordano, 100th Maintenance Squadron aircraft structural maintenance journeyman, and Senior Airman Nick Dickens, 100th MXS metals technology member, created BEST to mimic a CV-22 blade and electrical system to help Airmen gain additional training and prevent damage to real-world blades. (U.S. Air Force photo by Airman 1st Class Brandon Esau)