 David Kaczynski had attempted to remain anonymous at the outset , but he was swiftly identified , and within a few days an FBI agent team was dispatched to interview David and his wife with their attorney in Washington , D.C. At this and subsequent meetings with the team , David provided letters written by his brother in their original envelopes , so the use of postmark dates enabled the enhancement of the timeline of Ted Kaczynski 's activities being developed by the Task Force . David developed a respectful relationship with the primary Task Force behavioral analyst , Special Agent Kathleen M. Puckett , with whom he met many times in Washington , D.C. , Texas , Chicago , and Schenectady , New York , over the nearly two months before the federal search warrant was served on Kaczynski 's cabin . 
