Ryan McAvoy said:
I've decided that the football Droid ...in the teaser... was rushing to warn of danger.
You're kidding, right?
He's obviously part of an alarm system.
The entire trailer is clearly drawn from just one sequence, except for the cross-sword and wet X-wings.
Tattooine's surface is "Rebel Territory", while the Falcon does battle with an invading Imperial squadron. The Falcon shoots down a Tie fighter, and the unhelmeted trooper is now down in hostile territory, setting off the alarm-droid roller-ball guy, who notifies the girl on the popsicle, who sets off (recklessly, as is her wont, we will soon learn) to exterminate him to add another trooper-token to her treasure-belt.