- last post: 01.01.0001 12:00 AM PDT
As far as Halo, Captain Keyes was the highest ranking officer of the human forces. Thus, he holds the most knowledge such as the location of Earth. The Flood does prioritize. Keyes and his squad were the first humans that ran into the Flood. The Flood could've immediately captured the squad and assimilated them into the Keyes Flood so they would have the knowledge of two races-Covenant and human.