 Computer @-@ generated imagery ( CGI ) was used extensively throughout the film to create environments and elements , such as bullet holes and flames . More dangerous objects such as a taser or the handcuffs used to strangle Winter were also made from CGI . Five companies were responsible for visual effects . The two most involved were CIS Vancouver and Framestore . CIS Vancouver recreated the White House since the crew did not have permission to shoot in the building , and made a digital elevator shaft for the scene where Salt goes down into the White House bunker . Framestore was responsible for the assassination attempt on the Russian president , which combined actual shots of St. Bartholomew 's Church , a digital recreation of the church 's interior , and scenes with actor Olek Krupa falling down a collapsing floor . 
