Weapons crates are seen with the Hammer Industries label, the company owned by Justin Hammer in Iron Man 2 (2010).
The video of the new military tech features Polish. Roughly translated, the man says, "Don't worry, you will be safe. Everything will work. Stand there a bit longer. Stand...good, yes."
In the conversation between Claire Temple and her mother, they mention "Aliens coming out of the skies, people with silver hammers, green monsters" referring to Loki and his alien Chitauri army, Thor, and The Incredible Hulk as seen in The Avengers (2012). Also Claire mentions "a blind man that can see" and undead Ninjas with autopsy scars killing one of her co-workers referring to the events that she saw take place during season two of Daredevil (2015).
The episode's title is the name of Gang Starr's song from the album Step In the Arena.
Fish names a chess maneuver called the Blackmar-Diemer Gambit when joking about seating Pops ex-lovers away from each other at his funeral. The way the move works is that in the beginning of the game, you sacrifice a pawn to open up the board and make a more aggressive move This is also an interesting metaphor for Luke's mental chess game against Cottonmouth, as that is exactly what Cottonmouth is doing by sacrificing the pawns of Harlem to opening things up to make a move on Luke Cage.