Alps Navigation Army Chief Warrant Officer 2 Bill Powers, a CH-47 Chinook pilot, flies a helicopter into the Bavarian Alps for high altitude and pinnacle ridge landing training, May 4, 2020. SHARE: Download: Full Size (7.3 MB) Tags: GPS, Army Credit: Army Maj. Robert Fellingham VIRIN: 200504-A-KM584-974Y.JPG Photo Gallery