When Tara and Jorge are driving the pickup truck and robots are dropped from a helicopter, they find a weapon that was given to them by Derek. Jorge calls the weapon a RPG grenade launcher when in fact it's a 40mm grenade launcher. RPG grenade launchers fire a grenade that is propelled using a small rocket motor. The style grenade launcher they had projectiles are fired like a bullet, the projectile sits inside of a cartridge and when the round is fired the primer ignites smokeless powder then propelling the projectile down and out the barrel.
Olivia Crosby's character is listed as Black Dragon in the credits, but her character refers to herself as Red Dragon as do all other characters.