In the other post we talked about how there was not too much originality in the movie. I think there were many homages in this film. I am going to start off with a few.

When Morgan Freeman was firing the belt fed fed weapon, he paraphrased Roy Schneider in Jaws. "Come on you son of a bitch"

Three drones flying through a canyon in the same formation as Darth Vader and two tie fighters.

When a drone is destroyed outside the scab base, it spins wildly firing in all directions like the Death Blossom maneuver in The Last Starfighter.

M3 and
M80