When Daisy goes after the sniper on the rooftop in Sunbury, PA, the mountains in the background are covered by scrub brush, rather than the deciduous forests and farmland of Central Pennsylvania.
Trivia: Although it isn't named on-screen, the exploding bullet fired at Jeffrey is a "Judas bullet," created by Hammertech and made from Chitauri metal. Similar bullets were used against Luke Cage in the Netflix series.
Trivia: An article in the newspaper Coulson was reading, refers to the death of Peggy Carter aged 95.
Trivia: The first name of Skye's father, Cal, is revealed. Skye's birth name of Daisy is also given. (see Notes)
Trivia: We find out that Melinda's middle name is Qiaolian and Grant's middle name is Douglas.
There is a Ohio University, but no University of Ohio as presented here.
Batesville, UT is an actual town located in Utah's Tooele county. However, in 1887, the name of the town was changed from Batesville to Erda.
Although the episode is shot in actual location in the Stockholm subway, they are not using the correct train. When shot from the outside it's the real train but from inside it's not. Stockholm trains do not have the seats along the sides, so that people faces each other. An the seats are padded with real fabric. The chart of the subway lines looks to be the real lines but not the chart that is used in the real trains.
When Grant disarms Todd Chesterfield of his double barrel shotgun and aims it at him,you the cocking sound of a pump action rifle is heard. Double barrel shotguns do not make that sound.
When Ward it looking for the helicopter in Paris, the Eiffel Tower is shown behind him, then again in front of him when he takes off.