Trivia: In the scene where Salt jumps off the subway, the dark and heavily guarded station is supposed to be the 51st Street Station on the IRT Lexington Avenue Line in Manhattan, the nearest station to St. Bartholomew's Church. However, it is recognizable as an IND Station by the thick tiled columns, indented green-striped walls, and the wider train, and is in fact the Hoyt-Schermerhorn Station in Brooklyn, with its signs covered by the number "51". (00:46:40)
Trivia: Orlov's "hideout" is on a scrapped ship located in a 'bone yard' of other scrapped ships waiting to be dismantled, etc. This 'bone yard' of ships is located at a landfill site on Staten Island - I believe the name is the "Fresh Kills" Landfill. This is the landfill where debris from 9/11 was taken, and can briefly be seen in the background of a few panoramic shots.