This file is in the public domain.Therefore, it is public property and can be used by anyone. Here are some reasons why the file could be in the Public Domain:
•The owner released it into the Public Domain
•The file is of an image whose copyright has expired
•The file is of an image that was taken by a photographer from a military organization
If the file does not meet any of these criteria, it is very possible that the file is not actually in the Public Domain and therefore needs to be reclassified.