Beginning in 1929 the Nazi's actually attempted to develop a sun gun essentially as depicted in the show. The actual research was done in Germany and no panels were ever completed. A sun gun was also part of the movie Die Another Day (2002).
The African nation of Bahari does not exist, although there is a village in Bangladesh with that name. There is also a town in the Nile Valley Egypt called Silwa Bahari.
This episode marks the fifth time director Dwight Little and actor Robert Patrick have worked together. Little previously directed a season 9 episode of The X-Files, an episode from season 1 of From Dusk 'Till Dawn: The Series, and even an episode from the previous season of Scorpion.