Hello; The C-17 Globemaster III is a strategic transport aircraft, able to airlift cargo close to a battle area. The size and weight of U.S. mechanized firepower and equipment have grown in recent decades from increased air mobility requirements, particularly for large or heavy non-palletized outsize cargo. It has a length of 174 feet (53 m) and a wingspan of 169 feet 10 inches (51.77 m), and uses about 8% composite materials, mostly in secondary structure and control surfaces. The C-17 is powered by four Pratt & Whitney F117-PW-100 turbofan engines, which are based on the commercial Pratt and Whitney PW2040 used on the Boeing 757. Each engine is rated at 40,400 lbf (180 kN) of thrust. The engine's thrust reversers direct engine exhaust air upwards and forward, reducing the chances of foreign object damage by ingestion of runway debris, and providing enough reverse thrust to back up the aircraft while taxiing. The thrust reversers can also be used in flight at idle-reverse for added drag in maximum-rate descents. In vortex surfing tests performed by two C-17s, up to 10% fuel savings were reported. I’d like to correct a small error in this video: The mechanical Cone Penetration Test as shown in the video was not developed by the US Army Corps. It was developed somewhere around the 1930’s by the Dutch who were the experts on soil bearing capacity given their environment of low lying lands etc.