After Robert K. Preston flunked out of flight school in Texas, the United States Army reassigned him to Fort Meade in Maryland.Preston desperately wanted to fly, and he no longer had any path to do that in the military. Still, he was required to serve two more years—a commitment about which the 20-year-old soldier was less than enthusiastic.Also Read: This is why the Huey UH-1 became a symbol of the Vietnam WarThe disgruntled private also recent…