I’m white -no military service. They hired me - in Memphis! Maintenance was the exception to that rule. The test was pretty hard. They dumbed it down 2 years ago because Maintenance was 90% white. Now we have custodians that don’t know a/c from d/c qualifying to be electronic technicians
You are up against janitors with masters degrees competing for the A/C HVAC jobs!~ if i were you I'd study the operations manual and the domestic mail manual so i could understand what the business is about and what it is usps hopes to achieve with all that automation equipment. That'd give you a knowledge base to propel yourself into supervision or management within the next 5 years (NOTE: USPS is as slow as the Marine Corps when it comes to promotion)