Thanks for playing!
I just realized that I don't have a tutorial for hostage objective, that will be rectified in the future.
Basically a suspect will be designated as an "executioner" and will stand next to the hostage, killing it when he gets line of sight on an officer.
I can see how that can be confusing on the first hostage level where there's some long sightlines that executioners can see you from, my bad.
btw do you have any idea of what caused the crash?