 What's unique about Universal Hydrogen's approach to hydrogen aviation? Well, we've taken a look at the problem on an ecosystem level. So we're not looking at individual point solutions. We tried to look at all the different gaps that existed along the hydrogen value chain. So the two main ones that we identified were you can't get hydrogen airports today. There's not this wide distribution network for hydrogen as a fuel. And so we're solving for that. And the other thing that we saw is that there really aren't aircraft that are designed to fly or large aircraft that are designed to fly with hydrogen. So we're working on a relatively large aircraft powertrain to solve that problem.