In the near-future, in a war between aliens and humans, the aliens hatch a plan to seemingly assassinate a human leader (on Earth), but make it look like it was done by other humans. They have it planned for a few months from now, to attack the human when they are traveling (predicted to be by helicopter) to an important summit.
The key word being "seemingly"; as revenge for something the human did to piss off the aliens, they want to prevent the human from actually dying by using biotechnology to infect the human with something that will make them resistant to the damage from the crash and be controllable by the aliens like a puppet.
Question: What changes does the infection/nanomachine need to do to the human's body in a few months to survive a crash from a height of about 80 - 90 meters (200-ish feet)? The brain at minimum needs to still be intact so that the human can be controllable. If any unimportant body parts get messed up in the crash it's ok, though ideally they should still be able to move around.
However, the human cannot have noticeable changes on the outside before the crash (at least not enough to get them sent to the ER to get them checked). They might notice themselves feeling weird or sick or looking a bit different, they just can't be worried enough to go to the doctor in the span of the months before the summit.
The problem I have is that I want the leader to survive:
- landing on concrete (it's in the middle of a city)
- a rough landing since helicopter rotor is damaged from shrapnel (got partially caught by an explosion of a missile)
And I was having trouble explaining how alien biotech can prevent internal hemorrhaging and brain damage. I would like to know how they can augment the human body to prevent these injuries (in a way that isn't visibly obvious).