The McAlester Army Ammunition Base in McAlester, Oklahoma was the largest base of its type when the Second Great Depression came upon us all. It had built, stored, decommissioned, refurbished, disposed of, or otherwise dealt with heavy conventional ordinance ranging from 20mm shells to the Massive Ordinance Air Blast (also known as the Mother Of All Bombs) for over a century. They researched new weapons, trained people on existing weapons, and were generally one of the greatest practitioners of conventional destructive methods in the Western Hemisphere. McAlester was not the only base of its type, but it was certainly the single most important of its time. It is therefore not possible to overestimate how much the United States Army depended on McAlester to perform their primary mission of defending the nation from all enemies, foreign and domestic.