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  2. Lockheed P-38 Lightning - Wikipedia

    en.wikipedia.org/wiki/Lockheed_P-38_Lightning

    The Lockheed Corporation designed the P-38 in response to a February 1937 specification from the United States Army Air Corps (USAAC). Circular Proposal X-608 was a set of aircraft performance goals authored by First Lieutenants Benjamin S. Kelsey and Gordon P. Saville for a twin-engined, high-altitude "interceptor" having "the tactical mission of interception and attack of hostile aircraft at ...

  3. Federal Emergency Management Agency - Wikipedia

    en.wikipedia.org/wiki/Federal_Emergency...

    The Federal Emergency Management Agency (FEMA) is an agency of the United States Department of Homeland Security (DHS), initially created under President Jimmy Carter by Presidential Reorganization Plan No. 3 of 1978 and implemented by two Executive Orders on April 1, 1979. [1]

  4. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    For most applications, the difference between the two definitions is insignificant – one international foot is exactly 0.999 998 of a US survey foot, for a difference of about 1 ⁄ 8 in (3 mm) per mile – but it affects the definition of the State Plane Coordinate Systems (SPCSs), which can stretch over hundreds of miles.

  5. Sukhoi Su-57 - Wikipedia

    en.wikipedia.org/wiki/Sukhoi_Su-57

    The Sukhoi Su-57 (Russian: Сухой Су-57; NATO reporting name: Felon) [5] [6] is a twin-engine stealth multirole fighter aircraft developed by Sukhoi. [7] It is the product of the PAK FA (Russian: ПАК ФА, prospective aeronautical complex of front-line aviation) programme, which was initiated in 1999 as a more modern and affordable alternative to the MFI (Mikoyan Project 1.44/1.42).

  6. Airbus A330neo - Wikipedia

    en.wikipedia.org/wiki/Airbus_A330neo

    Its range would increase by 400 nautical miles (740 km; 460 mi) and although 95% of the parts would be common with the A330ceo, maintenance costs would be lower. New winglets , 3.7 metres wider and similar to those of the A350 XWB , still within ICAO category E airport requirements, along with new engine pylons, would improve aerodynamics by 4%.

  7. Navajo Nation - Wikipedia

    en.wikipedia.org/wiki/Navajo_Nation

    Though the treaty had provided for one hundred miles by one hundred miles in the New Mexico Territory, the size of the territory was 3,328,302 acres (13,470 km 2; 5,200 sq mi) [16] —slightly more than half. This initial piece of land is represented in the design of the Navajo Nation's flag by a dark-brown rectangle.

  8. Ozone - Wikipedia

    en.wikipedia.org/wiki/Ozone

    Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. [55] This ozone UV absorption is important to life, since it extends the absorption of UV by ordinary oxygen and nitrogen in air (which absorb all wavelengths < 200 nm) through the lower UV-C (200–280 nm ...