The Boys Show Off their Ghostbusters Costumes in New Image from Stranger Things Season 2

EW has revealed the first image from Stranger Things Season 2. In the image, it looks like the boys are out for Halloween, in their Ghostbusters costumes, when something catches their attention.

The new season is set to premiere on Netflix on October 31. I love that the boys are going as the Ghostbusters gang for Halloween, though I wonder what they are looking at in this photo. Any ideas?