The funeral procession for fallen 23-year-old U.S. Army Staff Sergeant Ryan Knauss passed through the Tri-Cities on the way to the Arlington National Cemetery from Knoxville.Knauss was one of the 13 U.S> soldiers killed in the Afghanistan attack in Kabul recently. The Bristol, Virginia Fire Department and Bristol, Tennessee Fire-Rescue Department hung a U.S. flag over Exit 74 near the Pinnacle to honor Knauss.