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  2. AN/URC-117 Ground Wave Emergency Network - Wikipedia

    en.wikipedia.org/wiki/AN/URC-117_Ground_Wave...

    It was surrounded on the perimeter by locked, 8-foot-high (2.4 m) chain-link fences topped with barbed wire. Typical site features included: [1] A main Longwave transmitting tower (generally between 290 and 299 feet (88 and 91 m) tall; A radial network of underground wires forming a large ground plane to serve as a reflecting surface for radio ...

  3. Wire obstacle - Wikipedia

    en.wikipedia.org/wiki/Wire_obstacle

    The effectiveness of any wire obstacle is greatly increased by planting anti-tank and blast antipersonnel mines in and around it. Additionally, connecting bounding anti-personnel mines (e.g. the PROM-1) to the obstacle with tripwires has the effect of booby-trapping the obstacle itself, hindering attempts to clear it.

  4. Ludington Light - Wikipedia

    en.wikipedia.org/wiki/Ludington_Light

    The Coast Guard transferred ownership to the City of Ludington under the terms of the National Historic Lighthouse Preservation Act. The lighthouse is being operated and maintained in partnership with the Sable Points Lighthouse Keepers Association, [ 7 ] which is a volunteer group that maintains, restores and operates this light, the Big Sable ...

  5. Traffic barrier - Wikipedia

    en.wikipedia.org/wiki/Traffic_barrier

    Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...

  6. Via fence - Wikipedia

    en.wikipedia.org/wiki/Via_fence

    Via fences use up a lot of valuable substrate real estate and so will increase the overall size of the assembly. Via fences too close to the line being guarded can degrade the isolation otherwise achievable. In stripline, a rule of thumb is to place the fences at least four times the trace to groundplane distance away from the line being ...

  7. Slat armor - Wikipedia

    en.wikipedia.org/wiki/Slat_armor

    An IDF Caterpillar D9 armored bulldozer equipped with slat armor surrounding its driver's cab. Slat armor (or slat armour in British English), also known as bar armor, cage armor, and standoff armor, is a type of vehicle armor designed to protect against high-explosive anti-tank (HEAT) attacks, as used by anti-tank guided missiles (ATGMs) and rocket-propelled grenades (RPGs).

  8. Mark 38 25 mm machine gun system - Wikipedia

    en.wikipedia.org/wiki/Mark_38_25_mm_Machine_Gun...

    The Mk 38 Mod 2 mounting, also known as the Typhoon Weapon System, [9] features remote control capability, meaning that the operator can safely control the system from within the ship's Combat information center. Two different ammunition types can be loaded into the system, and the operator can select which one to use from their console.

  9. Destroyed in Seconds - Wikipedia

    en.wikipedia.org/wiki/Destroyed_in_Seconds

    Destroyed in Seconds is an American television series that premiered on Discovery Channel on August 21, 2008. [2]Hosted by Ron Pitts, it features video segments of various things being destroyed fairly quickly (hence, "in seconds") such as planes crashing, explosions, sinkholes, boats crashing, fires, race car incidents, floods, factories, etc.