September 11th Tribute from a Mysterious Orb?

Photo date: September 11, 2015. Photographer: Mark Mahin.

The photo below was taken in Grand Central Terminal in New York.  We see a mysterious orb on the edge of the US flag.

This is the seventeenth time I have photographed an orb positioned on the edge of a US flag. See this post for links to 16 other photos I have showing an orb positioned on the edge of a US flag.  The repeated appearance of orbs on the edge of flags in so many photographs seems to be evidence that orbs are sometimes selectively choosing their positions. See my posts labeled "orb selective positioning" for 112 photographs supporting such a hypothesis.