Posted by: Omanisat
That still leaves the safety issue. A fission reactor would melt down if it was breached, say in a crash. A fusion reactor would vapourise a significant area should it ever rupture. And weight would most certainly be an issue for a drop ship.
I vote some as-yet-unknown to science clean energy source. Colloquially called "fusion coils".
Reason being MJOLNIR suits use these fusion reactors, and, by your logic it is a terrible idea because every time a spartan gets shot at BOOOM! we lose half the Army. :P
While I agree with you wholey, you'd never see me with a fusion reactor strapped to my arse, the UNSC must have a 'safe', 'clean' and 'stable' reactor for them to risk equipping their elite troops with them as standard.
Not to mention it is mentioned that soldiers have portable fusion reactors. Again showing that they may not be fusion in the way we think of it.