The 102nd are an All Klingon Squadron, the only one to serve on a Federation Starship. This is a test run Squadron, the Pilots have sworn to uphold the Federation Laws when flying under the Federation banner. But as they are Klingon Warriors their heritage goes lock-step with their oths to Starfleet Code of conduct on times.
All Klingon Pilots are from Well to do and noble houses, when this idea was proposed, Lieutenant Commander Jasmine Somers volunteered to have a Klingon fighter Squadron on her new Command. So it came to pass that an All Klingon Squadron was stationed on the USS Tomcat and unlike their fellow Rebel Squadron Pilots have survived mostly intact, but they have never really been tested in all out combat yet, much to their and the COs chargrin.