Yes, but it only applies for US troops with security clearance. As he points out guys on the ground and allies that they don't necessarily want to share crypto with can't join the game.
Just as I may want to share how much money I have in the bank to a business asociate to prove I have the assest to make a deal.
I'd do this by showing him/her the bank account information on screen, but I don't want to give him/her the transit, bank acount number and password to access said bank account.