This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
US Navy NSD Seabees secure bolts during the construction of heavy timber tower structure. en CAMP SHELBY Miss July Seabees assigned to Naval Mobile Construction Battalion NMCB Det Sierra secure bolts during the construction of heavy timber tower structure NMCB is participating in Operation Bearing Duel the battalion's field training