Justin,14, practices the triple jump challenge at the Butler Stadium on Marine Corps Base Quantico on Aug. 3, 2013, during a practice session for the Special Olympic Track and Field Meet, which is scheduled for Sept. 7. - Justin,14, practices the triple jump challenge at the Butler Stadium on Marine Corps Base Quantico on Aug. 3, 2013, during a practice session for the Special Olympic Track and Field Meet, which is scheduled for Sept. 7.