Your question begs many further questions from we who answer these posts. My best advice to you is to contact a local attorney and discuss the problem and see what solutions they propose.
You may want to discuss your situation with a lawyer in more detail. Most lawyers on Avvo offer a free phone consultation.
This post is provided for general informational purposes only and is not intended to be legal advice specific to you. This general information is not a substitute for the advice of an attorney in your jurisdiction. The attorney client relationship is not established by this post.
They can be a non profit but not a 501(c)(3). That means they will have to pay taxes but they can fundraise and sell merchandise and use the surplus for purposes consistent with a non profit. If they are specifically misrepresenting themselves as a 501(c)(3) report them to the IRS. If you have threats from USAF personnel, contact the USAF Inspector general's office.
This is not legal advice but a general comment on society based on a limited set of hypothetical circumstances. No one should act or refrain from acting based on these comments without seeking appropriately licensed legal or professional advice. The author disclaims all liability in respect to actions taken or not taken based on his comments.