Sick Idea for a practical joke....

If I lived in the fictional universe of this movie I have the prefect practical joke to play on the main character "Miles".

Assuming that the military successfully eradicated the pod problem and the world was safe Miles would likely be hailed as a hero by the world but would have major PTSD. A perfect practical joke would be a few years after the invasion is defeated act emotionless around him but dont over do it make it subtle enough that it does not seem like an act that would really freak him out. Would be even better if you could get a few others to do it for a while.