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Harvey armor was a type of steel naval armor developed in the early 1890s in which the front surfaces of the plates were case hardened. The method for doing this was known as the Harvey process , and was invented by the American engineer Hayward Augustus Harvey .
The Cheyenne Mountain Complex is a United States Space Force installation and defensive bunker located in unincorporated El Paso County, Colorado, next to the city of Colorado Springs, [2] at the Cheyenne Mountain Space Force Station, [a] which hosts the activities of several tenant units.
Case colouring refers to this pattern and is commonly encountered as a decorative finish on firearms. Case-hardened steel combines extreme hardness and extreme toughness, which is not readily matched by homogeneous alloys since hard homogeneous steels tend to be brittle, especially those steels whose hardness relies on carbon content alone.
Case hardening is a weathering phenomenon of rock surface induration. It is observed commonly in: felsic alkaline rocks, such as nepheline syenite , phonolite and trachyte ; pyroclastic rocks , as pyroclastic flow deposit, fine air-fall deposits and vent-filling pyroclastic deposits; sedimentary rocks , as sandstone and mudstone .
The 3rd Cavalry Regiment, formerly 3rd Armored Cavalry Regiment ("Brave Rifles") [2] is a regiment of the United States Army currently stationed at Fort Cavazos, Texas.. The regiment has a history in the United States Army that dates back to 19 May 1846, when it was constituted in the Regular Army as the Regiment of Mounted Riflemen at Jefferson Barracks, Missouri.
The 178th Attack Squadron (178 ATKS) [1] is a unit of the North Dakota Air National Guard 119th Wing located at Fargo Air National Guard Base, North Dakota. The 178th is equipped with the MQ-9 Reaper. The squadron operates General Atomics MQ-9 Reaper, a medium-altitude, long-endurance, remotely piloted aircraft. The MQ-9's primary mission is ...
After the RAF assessed the Northrop Nomad Mk Is as "obsolete", most of the Nomads were sent to South Africa for use as trainers and target tugs. [6] [20] [21] The Nomads suffered shortages of spare parts (particularly engines) and from 1942 onwards were gradually replaced by Fairey Battles. The last Nomads were retired in 1944. [21]
The 178th Wing is a unit of the Ohio Air National Guard, stationed at the Springfield-Beckley Municipal Airport ANG complex, Springfield, Ohio.If activated to federal service, the wing is gained by the United States Air Force (USAF) Air Combat Command (ACC), with elements of the wing gained by the Air Force Intelligence, Surveillance and Reconnaissance Agency (AFISRA).