Some of the Russian guards are carrying Yugoslavian M70 rifles instead of the correct Russian AK74 or AKM.
Snart tells a guard that Vostok used Sara's body under cover in a smallpox weapons trial. however the W.H.O. declared smallpox eradicated in 1980 6 years before this episode takes place.
In the Pilot, Dr. Stein "roofies" Jefferson with an alcoholic drink, while in this episode he's expressing concern over Jefferson not being 21 yet when he's offered a regular alcoholic beverage.