Commodities
Ron Koepp, a Tinker materiels engineer, shows students a metal bolt stretched to its limit as an example of tensile and failure tests he performs in the Structural Integrity Lab of the Oklahoma City Air Logistics Center. Students toured labs Feb. 24 during the annual Oklahoma Society of Professional Engineers Engineer for a Day program. Students from left are; Marshall Hartley, Harrah High School junior; Braden Hobaugh, Harrah senior; and A.J. Race, Mustang High School ninth-grader. (Air Force photo by Margo Wright)