Well, you've got the rather cartoonish image of the armadillo shaking its weak, mailed fist against the sky, and you have the SAC insignia. There were 8 SAC bases in Florida and, of course, others in Canada and Europe. "The Armadillo" has always struck me as a Cold War poem. Independently, Julie Kane noted the same thing:
https://percontra.net/issues/23/nonf...robert-lowell/