 Machines makes it like that glue that keeps everything together. Out in the real world, we're part of that mechanic that's not in the shop. Part of that mechanic in the backyard that knows everything already. I'm Machines made first class Brandon Charles Hill. I've been in the Navy 11 years and I serve on board the USS San Francisco. As a machines made on board the USS San Francisco, we maintain refrigeration systems to keep our stores and foods supply cold. Only thing we're really limited by since it's a nuclear powered submarine is food. That's pretty important to make sure that our refrigeration systems are always online and ready to go. If without food we're important. We maintain a hydraulic plant which pretty much helps us maintain depth and steer the ship or steer the boat. Also we maintain emergency diesel generator which is the backup to the nuclear reactor. And without the diesel being up to date, up to maintenance, we wouldn't go out to sea. So I look at that as we pretty much run everything on board the ship.