All the lip-reader can make out from the surveillance video is "the loop got pinched," but the team is able to identify a man in his late 40s or early 50s in the Southwest with a possible military connection. They also discover major trauma in his leg, elbow and ankle, along with a huge scar on his thigh. Dan suspects a parachuting accident, but Bill thinks it's rock-climbing. Dan processes the subject's psych data and determines he's very cool, tough-minded and highly intelligent. Skip Palenik, the forensics expert, ascertains that pollen found on the subject's clothing is from the Southwest and Bill, with the help of a botanist and the image of a plant from the video, narrows the area to southern Arizona. But it's only when Skip detects leaded fuel from the man's hand swabs that the team is able to establish that he's a pilot; plus, "the loop got pinched" is found to be an aerobatics term. Finally, after the subject's blood test reveals anthrax antibodies, they are able to narrow the search to Gulf War vets and, at a Phoenix-area airport, they find the subject.