Heavy Lifting Navy Seabees carry steel to be used for building k-spans at Marine Corps Air Station, Yuma, Ariz., May 14, 2021. K-spans are pre-engineered metal structures. SHARE IMAGE: Download Image: Full Size (0.37 MB) Tags: marine corps, navy Photo By: Navy Petty Officer 3rd Class Brandon Blevins VIRIN: 210514-N-CE120-1009A.JPG Photo Gallery