Dig on Salvatore Cezar Pais research for Navy on superconductors and mass reduction/crafts
The research PDFs have him working for the Navy in MD.
A hybrid craft using an inertial mass modification device
https://arc.aiaa.org/doi/10.2514/6.2017-5343 (see pais2017.pdf)
Room Temperature Superconducting System for use on a Hybrid Aerospace-Undersea Craft
https://arc.aiaa.org/doi/10.2514/6.2019-0869 (see pais2019.pdf)
Reference yesterdays US Patent PDF >>6311290 (US10144532, US20190058105A1, US20180229864A1)
Reference article from yesterday >>6311345