Every state upholds different laws pertaining to self-defense, and if you know that you only caused the death in question because of a legitimate fear of imminent bodily harm, your attorney can assist you in proving that you were forced to act in self-defense. In the event there is little to no witness testimony that can prove your claim, a good attorney may be able to consult forensics experts and other expert witnesses who can explain to the court exactly how the fatal encounter in question unfolded.