https://www.npr.org/2021/12/20/1066106160/white-house-staffer-on-air-force-one-tests-positive-for-covid-biden-tests-negati#:~:text=Gaming-,White%20House%20staffer%20tests%20positive%20for%20COVID%3B%20Biden%20tests%20negative,Monday%2C%20the%20White%20House%20said.
whoops....2 year old article