I just watched "Court Martial" in which Kirk is accused of negligence, resulting in the death of a crew member. Said crew member had to report to an "ion pod" to take readings during an ion storm, and the pod had to be jettisoned in order to save the ship.
What purpose did the ion pod serve, i.e. why did the crewman have to be in it during the storm?
And why did the pod have to be jettisoned?