In 1.16 (Mako Tanida), Liz says to Jolene that her friend Ellie is a real estate agent. In this episode, Ellie is a doctor that Liz calls on to save Tom.
When Berlin and Red are talking about the Kursk bombing, Berlin says that "15 men were killed." However, when Cooper and Deputy Attorney General Wright are talking about the bombing, Wright says it left "12 people dead."
It's mentioned that the Semtex that brought down flight Pan Am 103 was hidden in a coffee tin, when in fact it was hidden in a radio cassette player.
Berlin names some Soviet era agencies. Unfortunately, he mentions Stasi, maybe incorrectly instead of Spetsnaz. Stasi belonged to East Germany, and by that time, was dissolved already.
A car in Moscow shows a red license plate on a car, but the region code is 78, which is the code for St. Petersburg.
While Fitch is in the specially designed box, the bomb tech uses a radio in dangerous proximity to the bomb. This is a huge safety violation when dealing with RF Based Bomb detonators. No trained Bomb Squad tech would key up a Radio while having the bomb within feet of himself.
When the Marine lance corporal enters the meeting room he's wearing his dress blues with the red blood stripe on the pants. Lance corporals are not permitted to wear the blood stripe. It must be corporals and above. He also has some pretty long sideburns which would be a no-no.
Just before the FBI and bomb squad officers place Fitch in the cell originally designed for Reddington, Special Agent Keen mentions its suitability because it's bomb- and RF (radio frequency)-proof. A few moments later, bomb squad members inside and outside the cell are talking via portable radio. If the cell was RF-proof, the radio signal wouldn't have been able to penetrate the cell.
The prop used for the bomb collar around Fitch's neck is not constrictive, and leaves ample room for his head to simply slip out.
Before Reddington and Berlin come to Moscow, the preview shows an onion-tower church, which is located in St. Petersburg.