Visual explainer: HEPA ventilation systems on airplanes filter & replenish air to reduce COVID transmission – but masks still provide extra protection
Author: Javier Zarracina and George Petras, USA TODAY
Kabul airlift, visualized: In 16 days, massive planes moved enough evacuees to fill a small city
U.S. military evacuates more than 122,000 from Afghanistan in historical airlift