Boeing Chinook (UK variants) Boeing Chinook (UK variants) The Boeing Chinook is a large, tandem rotor helicopter operated by the Royal Air Force (RAF). A series of variants based on the United States Army's Boeing CH-47 Chinook, the RAF Chinook fleet is the largest outside the United States. RAF Chinooks have seen extensive service including fighting in the Falklands War, peace-keeping commitments in the Balkans, Northern Ireland and action in the Iraq and Afghanistan wars. The Chinook aircraft, normally based at RAF Odiham, provides heavy-lift support and transport across all branches of the British armed forces, and is supported by the smaller, medium-lift helicopters
Chinook salmon fish travel over in elevation, and over , in their migration through eight dams and reservoirs on the Columbia and Lower Snake Rivers. Chinook eat insects, amphipods, and other crustaceans while young, and primarily other fish when older. Young salmon feed in streambeds for a short period until they are strong enough to journey out into the ocean and acquire more food. Chinook juveniles divide into two types: ocean-type and stream-type. Ocean-type chinook migrate to salt water in their first year. Stream-type salmon spend one full year in fresh water before migrating to the ocean. After a few years in