Question: What military branch did 2013 All-Pac-12 star Pat Tillman enlist to in 2002?
Sentence (from "Pat Tillman"): Patrick Daniel Tillman (November 6, 1976 – April 22, 2004) was a professional American football player in the National Football League (NFL) who left his sports career and enlisted in the United States Army in June 2002 in the aftermath of the September 11 attacks.
Relevant evidence: Yes