Defender Duty Army Staff Sgt. Odale Bell performs post-flight maintenance checks on a CH-47 during Defender Europe in Bulgaria, April 30, 2021. The exercise is designed to build readiness. SHARE IMAGE: Download Image: Full Size (1.86 MB) Tags: Army Photo By: Army Maj. Robert Fellingham VIRIN: 210430-A-KM584-558M.JPG Photo Gallery