In Euclid, Ohio, just outside Cleveland, sits a facility that most people would drive right past without a second look. But inside that facility, work is being done that could reshape America’s position in one of the most critical supply chain battles of our time. The company behind this work is REalloys (NASDAQ: ALOY), and they’re turning rare earth oxides into the defense-grade metals and alloys that go into the permanent magnets found in everything from fighter jets to missile guidance systems. REalloys doesn't have the name recognition…