We're carrying about 40 tubes on the vehicle. We're going to collect 20 to 30 probably for return. Once we have a sufficient set, we'll put them down on the ground and another mission, which we hope to launch in 2026, will come, land on the surface, collect those samples and put them into a rocket, basically. It's called a Mars Ascent Vehicle. That rocket launches those samples into orbit around Mars and it rendezvous with an orbiter and then the orbiter brings them back to the Earth and eventually they enter the Earth's atmosphere in an entry capsule and we collect them.