I'd check your FOM for the specific MIL leave policy. What I found real quick was "NOTE:
Company Crewmembers or Authorized Corporate Employees do not
have to be authorized through the CASS and Deltamatic system.
Verification of valid Company ID and authorization from Table 9-2
meets requirements."

What I take from that is: if you're jumpseating on your own company, you do not need to be verified through CASS.