You can see on this image, that the US flag was painted mirrored on the right/starboard side:
The “backwards” flag is actually part of the US Flag Code, which applies to spacecraft, aircraft, and even service members’ uniform insignia.
According to United States Army regulations, “The full-color US flag cloth replica is worn so that the star field faces forward, or to the flag’s own right.” The flag must always be positioned to look like it is flying forward, so it’s really all about perspective.
https://airandspace.si.edu/stories/editorial/heres-why-us-flag-sometimes-appears-backwards