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  2. Anti-personnel obstacle breaching system - Wikipedia

    en.wikipedia.org/wiki/Anti-Personnel_Obstacle...

    The anti-personnel obstacle breaching system (APOBS) is an explosive line charge system that allows safe breaching through complex antipersonnel obstacles, particularly fields of land mines. The APOBS is a joint DOD program for the U.S. Army and the United States Marine Corps .

  3. Aviation obstruction lighting - Wikipedia

    en.wikipedia.org/wiki/Aviation_obstruction_lighting

    Aircraft warning lights at the Mannheim telecommunications tower, in the background the bright torchlight of a steam cracker, in the distance warning lights from wind turbines Structure using a white strobe Structure using a Red/White Strobe Closeup of an aircraft warning light on top of a highrise in Changzhou, China Closeup of an aircraft warning light on top a factory facilities Structure ...

  4. Ground proximity warning system - Wikipedia

    en.wikipedia.org/wiki/Ground_proximity_warning...

    A ground proximity warning system (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. The United States Federal Aviation Administration (FAA) defines GPWS as a type of terrain awareness and warning system (TAWS). [ 1 ]

  5. Brownout (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Brownout_(aeronautics)

    The brownout phenomenon causes accidents during helicopter landing and take-off operations in arid desert terrain. Intense, blinding dust clouds stirred up by the helicopter rotor downwash during near-ground flight causes significant flight safety risks from aircraft and ground obstacle collisions, and dynamic rollover due to sloped and uneven terrain. [5]

  6. Mine-clearing line charge - Wikipedia

    en.wikipedia.org/wiki/Mine-clearing_line_charge

    The US Army also uses the Antipersonnel Obstacle Breaching System, which clears a path 0.6 to 1.0 meters by 45 meters, and is light enough to be carried by two soldiers. There have been reports of Russian forces using the UR-77 Meteorit MICLIC systems in Syria as offensive weapons to destroy buildings during urban fighting. [9] [10]

  7. Demining - Wikipedia

    en.wikipedia.org/wiki/Demining

    Deminers clear an area of vegetation and then divide it into lanes. A deminer advances along a lane, swinging a metal detector close to the ground. When metal is detected, the deminer prods the object with a stick or stainless steel probe to determine whether it is a mine. If a mine is found, it must be deactivated. [35]

  8. Light rail runs into new obstacle in North Loop: Key utility ...

    www.aol.com/light-rail-runs-obstacle-north...

    Transit planners say two major Xcel Energy underground electric transmission lines will need to be moved to make way for the $3 billion Blue Line light rail extension in Minneapolis' North Loop ...

  9. 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. Dummy tripwires can be ...