The Pittsburgh Steelers have decided to get proactive on the spy prevention front by a building a 25-foot-tall structure in front of one of their practice fields, ESPN reports.

The structure is reportedly made up of four black pillars about two stories high facing an adjacent office building on Pittsburgh’s south side, and for practice sessions the team can raise an attached giant black tarp.

“I’ll leave that somewhat mystical for you guys to hypothesize about the origins of that and its use, and at some point we’ll address it the right way,” said head coach Mike Tomlin Thursday when asked by reporters to explain the sudden need for privacy. “I know how it is, man. This is interesting times, drones and so forth. We do what we’ve got to do to prepare and get ready to play to have a level and fair competitive playing field.”

While Tomlin’s comments might be seen as more than a little paranoid, at least one of his player’s is behind him. Tight End Jesse James suggested that he sometimes sees suspicious people on the grounds who could easily be spying.

“You always have dudes out in the parking lot, and you don’t know really where they are from and they send security out,” James said. “It’s not something you really notice while you’re practicing, but if the defense is out on the field going against the scout team, you can see stuff going on.”

The Steelers host the Tennessee Titans in a preseason clash Saturday at Heinz Field.