Photo at Freeman Field,
by Earl L. Ware, Base Photographer
Freeman Field, 1945-6

The significance of this specific glider is that it was one of several hundred  CG-4A gliders built in 1945 with a paper composition floor rather than the reinforced plywood box floor.  The glider could carry 13 infantrymen or a Jeep.  Because of the floor, a trailer or howitzer could not be carried. The floor was reinforced at the Jeep wheel locations but not reinforced where the trailer or howitzer wheels would normally be positioned. 

Courtesy of Charles Day, Author "Silent Ones, WWII Invasion Glider Test & Experiment, Clinton County Army Air Field, Wilmington, Ohio", writing 11/27/2005  Email Charles Day