Mackenzie Cater and Jack Brosnan of the Nuclear Threat Initiative share insights on a new survey that the Gender Champions in Nuclear Policy project conducted about the impacts of COVID-19 on the nuclear policy field. On Early Warning: Zia Mian, physicist and co-director of Princeton University's Program on Science and Global Security, helps us understand the complicated legacy of the late Abdul Qadeer Khan, who is regarded as the father of Pakistan’s nuclear bomb. Final Warning: Press the Button Live is on Thursday, October 21.