We sure have. And it is a money pit. And then you have things like this: https://www.navytimes.com/news/your-navy/2019/01/10/two-sailors-in-aircraft-carrier-d

We sure have. And it is a money pit. And then you have things like this: https://www.navytimes.com/news/your-navy/2019/01/10/two-sailors-in-aircraft-carrier-drug-ring-plead-guilty-to-distribution-charges/ https://www.navytimes.com/news/your-navy/2019/01/10/two-sail... It's proof that you can build a robust and safe reactor, but like all things under triple constraints it will not be cheap.