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  2. Anti-aircraft warfare - Wikipedia

    en.wikipedia.org/wiki/Anti-aircraft_warfare

    Anti-aircraft warfare is the counter to aerial warfare [1] and includes "all measures designed to nullify or reduce the effectiveness of hostile air action". [2] It encompasses surface-based, subsurface (submarine-launched), and air-based weapon systems, in addition to associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons).

  3. Drillship - Wikipedia

    en.wikipedia.org/wiki/Drillship

    A drillship is a merchant vessel designed for use in exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes. In recent years the vessels have been used in deepwater and ultra-deepwater applications, equipped with the latest and most advanced dynamic positioning systems.

  4. Semi-submersible platform - Wikipedia

    en.wikipedia.org/wiki/Semi-submersible_platform

    Deepsea Delta semi-submersible drilling rig in the North Sea Comparison of deepwater semi-submersible (left) and drillship (right). A semi-submersible platform is a specialised marine vessel used in offshore roles including as offshore drilling rigs, safety vessels, oil production platforms, and heavy lift cranes.

  5. S-75 Dvina - Wikipedia

    en.wikipedia.org/wiki/S-75_Dvina

    During the Vietnam war, the Soviet Union delivered 95 S-75 systems and 7,658 missiles to the Vietnamese. 6,806 missiles were launched or removed by outdating. According to the Vietnamese, the S-75 shot down 1,046 aircraft, or 31% of all downed US aircraft. By comparison, air-defense guns brought down 60% and 9% were shot down by MiG fighters.

  6. Suppression of Enemy Air Defenses - Wikipedia

    en.wikipedia.org/wiki/Suppression_of_Enemy_Air...

    A US Navy EA-18G Growler, loaded with AGM-88 HARM anti-radiation missiles. Suppression of Enemy Air Defenses (SEAD, pronounced / ˈ s iː-æ d /), also known in the United States as "Wild Weasel" and (initially) "Iron Hand" operations, are military actions to suppress enemy surface-based air defenses, including not only surface-to-air missiles (SAMs) and anti-aircraft artillery (AAA) but also ...

  7. United States Army air defense - Wikipedia

    en.wikipedia.org/wiki/United_States_Army_air_defense

    The Air Defense Artillery is the branch that specializes in anti-aircraft weapons (such as surface-to-air missiles). In the US Army, these groups are composed of mainly air defense systems such as the PATRIOT Missile System, Terminal High Altitude Air Defense, and the Avenger Air Defense system which fires the FIM-92 Stinger missile.

  8. History of ground based air defense in the United States ...

    en.wikipedia.org/wiki/History_of_ground_based...

    The History of ground based air defense in the United States Marine Corps dates back to the early 1930s with the establishment of the Advanced Base Force. World War II would be the high-water mark for air defense units when 20+ defense/anti-aircraft battalions were formed with many seeing significant action throughout the Pacific Theater ...

  9. Sea-based X-band radar - Wikipedia

    en.wikipedia.org/wiki/Sea-based_X-band_Radar

    The radar is derived from the radar used in the THAAD theater ballistic missile defense system, and is a part of the layered ballistic missile defense system (BMDS) program of the United States Missile Defense Agency (MDA). One important difference from Aegis is the use of X band in the SBX.