Caller ID say "INJ AMER VETS".  They leave no message.

I call back after business hours (using *67 to block my number).  I hear the following, "Hi, you have reached the customer service line for Injured American Veterans' Foundation.  If you'd like your number placed on our do-not-call list, please, press 1 now.  If you'd like to speak to a customer service representative, please, press 2 now."

I select 2 to discover more.  I hear, "We apologize that we're not able to take your call at this time.  Our normal hours of operation for the customer service department are: monday through thursday 9:30 AM to 6 PM Mountain Standard Time with a lunch from 3 to 3:30; and friday 7:30 AM to 4 PM with a lunch from 1 to 1:30.  We are closed on saturdays and sundays.  Otherwise, please, call back during our normal business hours so that we may assist you.  Thank you and have a wonderful day."  I have heard this word for word before.  They have removed the initial line "Hi, you've reached customer service for Corporations for Character."  CfC is an annoying telemarketing firm.  They seem to align themselves with many scumbags.  They call relentlessly from many numbers."

I get lots of calls from scam veterans' charities.  I get none from legit ones.  Pulling this all together, I am assuming this is a SCAM.