BFJ Superhero Universe
Possible first chapter
Starts with Lieutenant United States and Long Arm on a helicopter with a small group on marines over a middle eastern desert. They had gotten reports that Dr. Mengele was working with a nearby terror group. When they reach the mountain compound they are bombarded by rpg and small arms fire. In response the Lieutenant and Long Arm to jump off the helicopter (not a real high jump) to kill the terrorist before they shoot down the helicopter. Mid battle they discover what Dr. Mengele had been doing there. He had been constructing cyborg terrorist. A battle then ensues between the heros, marines and cyborg terrorists.
From there it can either be that before they are able to get to Dr. Mengele; Captain AK and Tojo reach him first for their own purpose and the plot can unravel from there. They could use his biotech knowledge. to assist in creating a super soldier army as well as a virus to reanimate Stalin.
Also when the heros return from this mission they could encounter government officials and The Patriot. The officials inform the heros that they are no longer needed and that The Patriot can handle everything. but the Lieutenant and Long Arm now know that something bigger is afoot and can’t walk away. maybe the government officials also tell them that if they continue on they will be charged with treason. so then not only do they have to deal with Captain AK but also their own government.