Commander:
Did he follow Ledo when he missed the wormhole or did he somehow come later when some scientist calculated the coordinates Ledo might have been?
In the second case, scientist could make asumptions, then send probes to say 100 coordinates and get the SOS...
But for some reason, I think the alliance could care less about a machine caliber and ensign.

So now, that the commander is there, Ledo can't be the king of the hill anymore. So whatever the guy wants, Ledo has to submit. And it's probably Hideauze wipeout.

Thing is, the elements Chambers showed us indicate that earth Hideauze can become as dangerous as space Hideauze pretty quickly.
If I understand correctly, Space Hideauze are in symbiose with those algae and can extract power for weapons, life support in space and stronger shells too. That also explains why they had the sun at their back when the alliance attacked, sunlight being their primary source of energy. Earth Hideauze only need to do the same, but never had the will to. So somehow they never took the path to wage war against mankind when they could. And they clearly would anihilate earth humans with ease.

But I suspect Ledo's and that commander's actions will change that and we have earth Hideauze switching to the highly lethal version... The other impact meaning no more electricity for earth humans...