During the Article 32 hearing, the prosecution, led by Captain Ashden Fein, presented 300,000 pages of documents in evidence, including chat logs and Classified material. The court heard from two Army investigators, Special Agent David Shaver, head of the digital forensics and research branch of the Army's Computer Crime Investigative Unit (CCIU); and Mark Johnson, a digital forensics contractor from ManTech International, who works for the CCIU. They testified that they had found 100,000 State Department cables on a workplace computer Manning had used between November 2009 and May 2010; 400,000 military reports from Iraq and 91,000 from Afghanistan on an SD card found in her basement room in her aunt's home in Potomac, Maryland; and 10,000 cables on her personal MacBook Pro and storage devices that they said had not been passed to WikiLeaks because a file was corrupted. They also recovered 14 to 15 pages of encrypted chats, in unallocated space on Manning's MacBook hard drive, between Manning and someone believed to be Julian Assange. Two of the chat handles, which used the Berlin Chaos Computer Club's domain (ccc.de), were associated with the names Julian Assange and Nathaniel Frank.