"... Shortly after returning from a trip in late 2009, Farmer erased electronic notes, in Microsoft Word format, that were stored on thumb drives, Zip drives and a shared drive at Citadel, agents wrote in a summary of one of the interviews with him. Farmer also threw away his handwritten notes because that was his normal practice and because they were incriminating, agents wrote. Farmer got rid of e-mails as well, according to their summary. “This,” they wrote, “wiped the slate clean."