Major McConnell, who served in the Persian Gulf war, now lives in Washington, where she is a computer officer who creates programs at the National Guard Bureau to safeguard Army secrets.
The treatment assignment was directly accessible only to the computer officer responsible for the randomisation, the trial statisticians and the staff supplying a 24 hour code break service.
Prosecutors had spent much of the day offering testimony and pictures that the Federal Bureau of Investigation said it had found on two computers Officer Valle had used, along with exhibits showing his Internet searches.
On Tuesday, Corey Walsh, an agent with the Federal Bureau of Investigation, testified that a search of personal computers Officer Valle used showed that he had created files on scores of potential victims like Ms. Sauer.
South Wales police seized Natasha's computer and officers said they were attempting to trace any internet communication between the victims by email or through social networking websites.
His father is a senior computer systems officer in the New Castle office of Citigroup.
Last year, 670 police cruisers in the region got laptop computers so officers from different towns could talk to each other.
He later worked for the Ampex Federal Credit Union in Redwood City, Calif., from which he retired as a computer operations officer.
"What we've been using in the past is a sledgehammer," said Michael E. Ronayne, a computer security officer who lives in Nutley, N.J.
Several pieces of evidence from independent sources, including the intercepted conversations, point to one possible suspect, according to David Brumley, a computer security officer at Stanford University.
