I'm Not Feeling Comfortable Saying That

I feel like we're probably 20 years out from that I will need to land a bunch of infrastructure ahead of astronauts. We need to get better at things like returning at least rocks from the surface of Mars And how we can get rocks back. But it's starting to be the kind of thing where I would feel comfortable giving a talk to a group of elementary school kids and saying some of you will be the first ones to set foot on Mars.