I've been thinking about Scream recently, and how it could apply to the Drill code name.
Correct me if I am wrong, but for a while now HHN has been trying to get the rights to Scream, and for one reason or another it falls through every time. Maybe this time they finally got them, so it's a case of 'this is not a drill, we have Scream.'
I am likely way off base, but Scream seems like one of only a few major horror IPs that have not been done yet.
Or maybe it refers to the drills that the spheres in Phantasm use to kill. Then all my Christmases would come at once.