Factual error: The helmet is a Cooper/Bauer HH3000 that wasn't made until 1989 or 1990. (00:26:30)
Factual error: Throughout the first season, set in the early 80s, the two Russian agents are shown carrying and using 3rd version Beretta P92F semi auto pistols. The P92F didn't come out until 1988.
Continuity mistake: In an earlier episode, FBI agent Stan is shown parking on the left of the drive and going into the house on the left. In episode 2.8, Elizabeth is shown coming out of her house to see the New Car, but it's the same house on the left that was shown to be Stan's house earlier. Same house used for both families.