Chen said the air onboard large jets, including commercial airliners and Air Force One, is typically filtered through High Efficiency Particulate Air, or HEPA, filters, which are designed to catch most particles. "If I were in an airplane -- even if it's Air Force One -- I would wear a mask," said Purdue's Chen. Walsh underscored that Air Force One stewards -- United States Air Force personnel who take great pride in their work -- would have no doubt been checking on Hicks, potentially exposing them to the virus. Walsh noted that "it's very rare for anything negative to be associated with Air Force One." "Air Force One is a very special place, it's become a symbol of the presidency," he said.

Source: CNN October 03, 2020 11:15 UTC