(Music) Well as the lead mechanical, I'm responsible for the design and the fabrication of the structure of the spacecraft. We're also responsible for all mechanical ground support equipment that's used lift and move the spacecraft throughout the facility and ground support equipment that the spacecraft resides in on its journey from Goddard to Japan. Well throughout the design there's various challenges, one noteworthy one was to basically integrate the prop system which has most of its components and fuel tank at the bottom end of the spacecraft but also the four components the, four thrusters at the top of the spacecraft which, the way the fuel lines are all welded together they wanted to integrate all that as a single unit. (raindrops) (beeping)