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 NSN Seabee uses an auto level to ensure an even foundation for school under construction. en GENDE GERADE Ethiopia March Engineering Aide Constructionman Apprentice Shawn Boyd assigned to Naval Mobile Construction Battalion NMCB Detail Horn of Africa uses an auto level to ensure an even foundation for school under construction