In "Call Of Duty: Zombies", "Richtofen" is in possession of two filled blood vials belonging to who?

In Call of Duty Zombies, Richtofen is in possession of two filled blood vials belonging to Sal DeLuca and Finn O'Leary. These blood vials are a crucial part of the game's storyline as they are used to harness the essence of these characters and manipulate their destinies. Despite the exact reasons why Richtofen specifically chose these two characters, their blood is integral to his plans and plays a significant role in the overall narrative of the game.