The shield of the La Republica De Costa Gravas is highly similar to the shield of the Republic of Colombia, prepared the same way, with the flags on the sides and the condor on top.
It's possible that the creative team had fun with the country name, Costa Gravas. It might be a wink to writer-director Costa-Gavras, noted for his political conspiracy thrillers such as Z and Missing.
Sarah says that Devon would have made a great spy. Originally, Devon was going to be revealed as an enemy spy after a few episodes. The character proved to be so popular that they scrapped this idea and made him a main character instead.
The first episode that doesn't include a Buy More scene or any of Chuck's coworkers.