These images are generally part of official U.S. military documentation and are in the public domain.
It appears this is part of a visual, rather than textual, essay archive. 112.jpg
Since the result is an image, I cannot read a full text essay from it. However, if you are looking for (like Bailey Scieszka's "112", or an ENG 112 essay), let me know and I can get that for you. File:Defense.gov photo essay 110808-F-RG147-112.jpg These images are generally part of official U