Trainees Keirsten Englund and Larlee Vang work together to create the tallest free standing structure able to hold a marshmallow. Members of the 934th Airlift Wing Development Training Flight competed in a marshmallow challenge on May 5, at the Minneapolis-St. Paul Air Reserve Station, Minn. The challenge was to build the tallest free standing structure strong enough to hold a marshmallow and tested trainees on problem solving, making assumptions, and teamwork. (US Air Force Photo/Staff Sgt. Samantha Wagner)