The Boeing CH-47 is a twin-engine, tandem rotor heavy-lift helicopter used primarily by the military. It is designed to transport troops, supplies, and equipment in various environments, making it versatile for different missions. The CH-47 has a distinctive appearance due to its two large rotors that rotate in opposite directions, providing stability and lift. Originally developed in the 1960s, the CH-47 has undergone several upgrades and variants, including the CH-47F and CH-47D. It is widely used by the United States Army and has been deployed in numerous conflicts around the world, showcasing its reliability and effectiveness in challenging conditions.