Lest lower Manhattan residents and workers descend into Air Force One flyover-type panic, the city has issued this alert: "Beginning 9:00 AM this morning, at s0 Exchange Place, a film production, approved by the City, may cause brief disruptions in Lower Manhattan. Filming includes a staged building evacuation and emergency response."

According to City Review, 20 Exchange Place, currently a rental apartment building, was designed by Cross & Cross in the Modern Classic-style. It housed a bank, notably the predecessor to the company that became Citigroup, and had some nifty features: "Among the building's modern features that seemed especially to impress the press of the day were an elaborate pneumatic tube system, a building-wide circulating ice water system, a basement reservoir of liquid soap, a new bronze substitute of nickel alloy with copper, three-way duct lines, the largest telephone exchange ever constructed, and a new-fangled double-decker elevator that serviced two floors at once." You may also remember its previous appearance as a bank in the Spike Lee heist film, Inside Man. It was named a city landmark in 1996.

And if you know what production is filming there, let us know in comments [or email us at tips(at)gothamist(dot)com]—if it's The Sorcerer's Apprentice, we're worried. Update: Thanks, readers—it's an episode of Law & Order: Criminal Intent. No Nicolas Cage, no worries.