After leaving the Army, McVeigh continued to visit private dentists throughout the country, including just days before the bombing. Often these visits occurred in mysterious circumstances. In a “Radiological Request Report” dated December 5, 1991, the attending doctor noted McVeigh’s upper gastrointestinal difficulties that included his retention of gaseous secretions and the possibility of duodenitis, an inflammation of the intestine commonly caused by viral infection, bacteria, and often resulting in an ulcer.