The "billiard balls" are snooker balls. Different game, more colours.
When the guard causing an earthquake with the walking stick, the billiard balls do not move although everything else in the room does.
After Myka goes to see Agent Kate Logan at the Secret Service Office in Chicago, there is an exterior shot. That is Boston City Hall Plaza, yet it is identified as Secret Service, Chicago Field Office.
The store across the street from the alleyway (where Pete chases Malone and Valda) is Parliament Furniture.on Parliament Street in Toronto, Ontario.