I joined this week for $5. I applied and self-qualified through Option #6 American Red Cross.

https://www.penfed.org/howToJoin/overview.asp

(You are eligible to become a member of Pentagon Federal if you are an employee or volunteer of the American Red Cross.) Since I donate blood, I figure that qualifies me as a volunteer of the American Red Cross.

There is no verification process nor did I have to supply or was I asked for any Red Cross volunteer number, etc.