What I have seen is that Air Force limits are 65, but were waived when there was a shortage in '18 and '19. Army has no limit... or it is just really really high. Covid exceptions are for theater of operation due to high risk of severe symptoms. 60 or 65 depending on where the job is. BMI of 30 is also a limit. Serious medical conditions are also a no-go, even if you pass a FAA first class medical with a special issuance and pass CRC.