American Ground is the story - until now untold - of the people who responded to the destruction of the World Trade Center on September 11, 2001. Within days, William Langewiesche made his way into the innermost recesses of the collapse. By virtue of the integrity and excellence of his previous work, he quickly secured unique, unrestricted, around-the-clock access to the site, the rescue workers and laborers there, and the meetings of city officials, engineers, construction companies, and consultants.