Images: 7th ESB Marines conduct bridge building exercise [Image 15 of 20]
Photo by Lance Cpl. Joshua Young
A combat engineer with 7th Engineer Support Battalion shoves a pin in place to connect the next piece of a medium girder bridge being built for the 7th ESB field exercise at Camp Pendleton, Calif., May 10. The bridge is put together entirely by manpower and pushed into place with a tractor, the only piece of machinery on the job.