I have one question/concern: why is almost nobody wearing a mask? Of course there is no need for people videoconferencing from home to wear masks, but many of t

I have one question/concern: why is almost nobody wearing a mask? Of course there is no need for people videoconferencing from home to wear masks, but many of the people in the livestream seem to be physically present on site. The only people I saw with masks were the people in the black suits helping the astronauts into the capsule. Masks seem like an inexpensive way to reduce risk, the CDC and WHO recommend them. Sure, there are other measures that can reduce transmission, but the lack of masks makes me concerned that other measures are not being taken, perhaps because both Elon Musk and Trump have been downplaying the risk of covid-19 and they are both present today.