https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12242164![U.S. Office of Defense Transportation system of port control and its traffic channel control. Sourced from the Library of…](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTA1L2xvYzIwMTc4Njc0MjctaW1hZ2UuanBn.jpg)
![U.S. Office of Defense Transportation system of port control and its traffic channel control. Sourced from the Library of…](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTA1L2xvYzIwMTc4Njc0MjctaW1hZ2UuanBn.jpg)
U.S. Office of Defense Transportation system of port control and its traffic channel control. Sourced from the Library of Congress.
U.S. Office of Defense Transportation system of port control and its traffic channel control. Sourced from the Library of Congress.
View public domain image source here
Public DomainFree CCO U.S. Government image for Personal and Business use