Especially during Halo 3’s early missions(Sierra 117, Crows Nest, Tsavo Highway, The Storm) where there were dozens of CAS-class assault carriers and CCS-class battlecruisers excavating the Portal at Voi, why did no ships just go and glass them? I mean the Covenant knew they were there since you were fighting them after all.
Real life: Because then there would be no game 
Canon explanation: maybe they didn’t know chief was there and thought they were just some regular marines?
They were never able to get the grunt comms operator awake…
Risk damaging Forerunner artifacts, you know? The single worst thing you could do in the Covenant.
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> Risk damaging Forerunner artifacts, you know? The single worst thing you could do in the Covenant.
What Forerunner artifacts would there be in an African jungle, an old 20th century human base, the savanna and the town of Voi?
Speaking of which…you enter Crows Nest from the Kenyan jungle and then exit into a savanna…what?
Despite common belief, the covenant doesn’t seem to use glassing trivially. Even the glassing of a planet seems to have more of a ritualistic significance.
I mean, why else would they even bother with ground forces unless forerunner stuff was involved?
Because they were all busy uncovering the Ark Gateway? They had a very (VERY) limited time to open the portal and get through before possibly the Flood and most certainly the Sangheili fleet caught up with them. With them all sitting around the portal in low atmosphere, they would have been vulnerable to any attack. So whatever the Chief and Arbiter could do was inconsequential compared to uncovering and opening the portal. At least Truth dispatched ground troops to keep them interfering.
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> Because they were all busy uncovering the Ark Gateway? They had a very (VERY) limited time to open the portal and get through before possibly the Flood and most certainly the Sangheili fleet caught up with them. With them all sitting around the portal in low atmosphere, they would have been vulnerable to any attack. So whatever the Chief and Arbiter could do was inconsequential compared to uncovering and opening the portal. At least Truth dispatched ground troops to keep them interfering.
This is pretty much right on.