At around 11:00 a.m., a little more than nine hours after the crisis had begun, the first of the planes from Moscow touched down on the tarmac in Kiev. Led by Boris Prushinsky, the Ministry of Energy’s nuclear accident emergency response team included scientists from Soyuzatomenergo and the institutes that designed the reactor and the plant itself, members of the KGB, and a quartet of specialists from Moscow’s Hospital Number Six—the State Institute of Biophysics’ clinic dedicated to treating radiological injuries.