Terrifying History on Instagram: "On October 2, 1986, a Soviet Mi-8 helicopter performing critical containment work at the Chernobyl nuclear disaster site crashed near the destroyed Reactor 4, killing all four crew members. The aircraft, callsign Cup-2, was engaged in the dangerous task of dropping radiation-absorbing materials onto the exposed reactor core when it collided with a construction crane cable obscured by poor visibility conditions. The crew - Captain Vladimir Vorobyov, Senior Lieute