Nat Geo HD Witness the disaster unfold as survivors reveal the first terrifying hours of a nuclear meltdown the world was never meant to see. (1 of 4) 7+. 2026-06-19 See the fallout unfold as pilots battle reactor fires, mass evacuations begin and the true scale of a global nuclear disaster emerges. (2 of 4) 7+. 2026-06-19 Witness the aftermath as crews battle radioactive fallout, a concrete tomb seals the reactor and the world questions the Soviet story. (3 of 4) 7+. 2026-06-19 Uncover the truth as trials unfold, hidden reactor dangers emerge and decades later Chernobyl's exclusion zone becomes a war zone. (4 of 4) 7+. 2026-06-19 After a brilliant crew manage to land an aircraft on the fritz, investigators must determine how a freshly serviced plane was released with a fatal flaw. (S22, ep 5) 7+. 2026-06-19 At JFK Airport, Homeland Security and CBP officers intercept stolen antiquities and fake visas, working on the front line to stop smuggling and fraud. (S4, ep 3) 7+. 2026-06-20