 And they're all working in very extreme environments. And so I can imagine that, you know, a firefighter suit has to do a lot of different things, you know, maintain life, protect from heat, be mobile, allow a firefighter to move around an environment that is constantly changing and with a lot of heat and then an astronaut in vacuum. And there's all sorts of stuff that we have to solve in order for us to be able to deploy these kinds of technologies.