Hey Jeremy, what an amazing thing to have witnessed!! Were you pretty close when you observed this grey? A few feet, few meters? Also, two separate sightings -in the same vicinity -within days of each other -from two different witnesses, it definitely sounds like they were in the area for a while doing something… Hmm… Where are you located, what city/state did this happen? And can you possibly post a few of those pictures of the grass circle you took? These kinds of sightings truly intrigue me, so much that I would love to research other possible sightings in that specific area and try to figure out what they wanted, and/or why they were loitering around and even stepped out of their craft to walk around on the ground in that particular area, what were they looking for?…. Let me know!