In the trailer for Season 5 of Call of Duty: Warzone and Vanguard we meet several villains from the series history. In the helicopter are Raul Menendez, Khaled Al-Asad, Gabriel T. Rorke, and He “Seraph” Zhen-Zhen. The four fly over a volcano and drop an ominous box into the crater.
What the sequence means becomes at least partially clear when you look at the new content for Season 5. The last season for Warzone and Vanguard brings the four villains as playable operators and lets a dormant volcano erupt on the Caldera map.