The Special and Visual Effects Team of the episode was also nominated for an Emmy Award on July 10, 2014.
There is a Wilhelm Scream when a grounder sets off a mine.
When the grounders are attacking the camp, you can hear everyone screaming in the chaos. Amongst the screaming you hear a man scream "game over, man!" in possible reference to Bill Paxton's famous line from Aliens (1986) "That's it man, game over, game over!"
The painting hanging on the wall of Clarke's room in the Quarantine Ward is The Starry Night by Vincent van Gogh.
There is a Brazilian flag painted on the side of Mecha Station as shown when Abby and Kane go outside.