I would push back on that, CISSP should be the golden ticket over the sec+. Unless their contract states its Sec+ only, Army regs will take it. Cant speak for the NEC there but they should be following those regs. Maybe the boss hasnt worked with someone with a CISSP before?
If the company is pushing for it, ask if its due to getting an account of something. In which case you can teach the boss a new trick. Could be some odd thing but that would be backwards.
I have seen some odd crap, like company only taking ppl with Bach and up due to someone forgetting a comma in the contract.