Hi guys! Totally new to all this, but I was checking out some flight paths in the area in question. There's this one plane which caught my eye. It's a Pima County Sherriffs department plane, with a squawk number of 6666. Now, I'm not very familiar with what law enforcement planes generally do, but this plane keeps circling in the same areas in Tucson. While they're not exact, they're pretty darn close to the CEMEX areas. I marked the areas on the map in red in the general area where CEMEX is. Seems pretty odd to me, and I figured I'd share.