Keywords: Mk 105 minesweeping gear towed by RH-53A.jpg A U S Navy Sikorsky RH-53A of helicopter mine countermeasures squadron HM-12 Sea Dragons pulling an Mk 105 minesweeping gear in 1972 The Austin-class LPD USS Trenton LPD-14 is visible in the background U S Navy Naval Aviation News April 1972 http //www history navy mil/nan/backissues/1970s/1972/apr72 pdf 1972 USN PD-USGov-Military-Navy Sikorsky RH-53 US Navy USS Trenton LPD-14 MK-105 Magnetic Influence Minesweeping System Helicopter Mine Countermeasures Squadron 12 United States Navy Helicopter Mine Countermeasures Squadron 14 United States Navy |