This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
Summary
DescriptionRating Badge SB.jpg
English: US Navy Special Warfare Boat Operator (SB). Crossed cutlass and cocked flintlock pistol superimposed onto an anchor.
This image is in the public domain in the United States because it contains materials that originally came from a United States Armed Forces badge or logo. As a work of the U.S. federal government, the image is in the public domain in the United States.
Original upload log
The original description page was here. All following user names refer to en.wikipedia.