the "Fortress on the Plains" in Hobbs, NM. the metal sculpture of Brian Norwood, a local artist.

It also depicts pilots-in-training who flew these Boeing B-17s at the former nearby Hobbs Army Air Field which was a prevalent training base during the Second World War. 

 There is no plaque or highway sign informing of said historical piece.

https://www.yelp.com/biz/fortress-on-the-plains-hobbs

https://www.newmexicomagazine.org/blog/post/hobbs-brian-norwood-sculpture/