Change snapshot on AMI to public?

[eric-freewill]

What are your thoughts on changing the snapshot on the AMI to be public? Being cautious, I like the idea of having a copy of your AMI just in case I need to fall back on it to spin up a new NAT instance due to some issue with your AWS account and it becomes temporarily unavailable. I'm unable to copy it since the snapshot isn't public and I understand if you want to prevent simple copies of the AMI.

"You do not have permission to access the storage of this ami"