At the time, and for years, the FBI's investigation focused on Stephen Hatfield, another researcher at USAMRIID, who they had decided was a good suspect. The FBI surveilled him and raided his home in hazmat suits multiple times. So the whole nine yards of investigation. After years of coming up with nothing solid, Hatfield was exonerated, and he sued the government in a case that was settled in 2008, with Hatfield being awarded $4.6 million.