bike safety
Lt. Col. Clinton Burpo stands with his trusty bicycle at McConnell Air Force Base, Kan., June 12, 2012. Burpo has logged more than 21,700 miles on his bicycle since he began using it to commute to and from work in 2006. Burpo is a 931st Air Refueling Group logistics readiness officer, (U.S. Air Force photo/1st Lt. Zach Anderson)