"It Isn't the Fall that Kills You" - eagle
In "It Isn't the Fall that Kills You" the characters ask a Russian official for assistance in saving Walter.
On the wall behind the Russian official between 2 windows was an image of a stylized heraldic 2-headed eagle on the wallpaper or on a plaque or on a textile or a flag - I couldn't see exactly how the image was displayed.
A two-headed eagle has been used as an emblem or symbol for thousands of years. In the middle ages it was a symbol of the highest political rank in European and other societies.
By about 1200 AD it was used as a symbol of imperial and/or almost imperial rank in the eastern Roman or "Byzantine" Empire, adopted at an unknown date from unknown sources and influences that have been much speculated about.
In the "Byzantine" empire and related and neighboring realms the double-headed eagle was usually gold on a red background when depicted in color. Such a double-headed eagle was often depicted on stone carvings, coins, robes of state, flags, etc. etc. in the "Byzantine" empire, the Latin Empire of Constantinople, the Empire of Trebizond, the Nicaene Empire, the Despotate of Epirus, the Despotate of the Moria, The Empire of the Serbs and the Romans, and the Empire of the Bulgarians and the Romans, etc. etc..
In the early modern period the the double-headed eagle of Serbia began to be depicted in illustrations as silver on red instead of the more probable gold on red. When Serbian states like Serbia and Montenegro regained independence and autonomy in the 19th century, they used the silver double-headed eagle on a red background as their coats of arms, and continued doing so today.
In Russia Grand Duke Ivan III the great adopted a two-headed eagle as an emblem about 1480, and today a gold two-headed eagle on a red field - with a shield on its breast with the image of a white horse and rider with a blue cloak trampling on a black dragon on a red field - is the coat of arms of the Russian Federation.
https://en.wikipedia.org/wiki/List_of_coats_of_arms_of_the_Russian_Federation
Naturally it would be fitting for a Russian official to have his national coat of arms displayed in his office.
But in the Russian official's office the two-headed eagle was black on a yellow or gold field.
In the days of the Russian Empire from 1721 to 1917 the coat of arms was gold with a black double-headed crowned eagle with the Moscow coat of arms of the horse and rider trampling the dragon on a shield on its breast. And that coat of arms was sometimes greatly elaborated.
https://en.wikipedia.org/wiki/List_of_coats_of_arms_of_the_Russian_Federation#/media/File:Greater_Coat_of_Arms_of_the_Russian_Empire_1700x1767_pix_Igor_Barbe_2006.jpg
The coat of arms of the Austrian Empire from 1804 to 1918 was also gold with a black double-headed eagle.
http://sissiofaustria.tumblr.com/post/120439552203/octoberchan-imperial-coat-of-arms-of-empress
http://www.embassymade.com/bloggin-embassy/2014/3/14/imperial-coat-of-arms
And both the Russian and Austrian imperial double-headed eagles were based on the coat of arms of the Holy Roman Empire up until 1806.
https://en.wikipedia.org/wiki/File:Grand_Coat_of_Arms_of_Francis_II,_Holy_Roman_Emperor_(1804-1806).svg
https://commons.wikimedia.org/wiki/File:Holy_Roman_Empire_Arms-double_head.svg
But I did not recognize the coats of arms on the shield on the breast of the double-headed eagle in the Russian official's office. So I don't know if he had the coat of arms of the Russian Empire, the Austrian Empire, the Holy Roman Empire, or some other coat of arms, in his office instead of the coat of arms of his country.
https://en.wikipedia.org/wiki/Double-headed_eagle