not now pleasenobut don ' t you love me . <| sep |> It didn ' t say that it was enabled just for the preseason , i would assume its enabled until they decide it isn ' t . <| sep |> deep stuff man <| sep |> A cheetah , so I could run up to 70 mph . <| sep |> We only SAW Sentinel Aggressors on Alpha Halo , but Delta Halo has a whole range of Sentinel forces , ranging from small Constructors to massive Enforcers , and there were even larger variants planned for inclusion before those levels got cut . The Delta Halo library was also surrounded by a powerful shield that even the Covenant , arriving in force with a fleet of many hundreds , needed the Arbiter to deactivate so they didn ' t need to resort to glassing it and risking damage to the structure . And the wreckage of Alpha Halo is riddled with malfunctioning systems and stray Sentinels to the point where it ' s a navigation hazard that needs an enforced quarantine . It ' s clear that Halos can be very dangerous places if their caretakers choose for them to be . If Guilty Spark communicated with the Covenant , then it was only through the damaged and suicidal Covenant AI on the Truth and Reconciliation that we see in one of the other Terminals , which would be enough to put him off . If a civilisation that treated its AI like that discovered the Flood , which is what inevitably happened , there was no telling what damage they could do . The AI had no reason to warn the Covenant it was actively hoping the Flood would kill its masters , allowing it the only freedom it could have . As for why Guilty Spark allowed the Covenant to land , their ships are powerful machines , and while the Halos possess significant defences , the Covenant could have done more than enough damage in retaliation to cripple his defences and perhaps unleash the Flood . Allowing them to land may have allowed him time to assess them better , lure them into positions where they were illprepared to defend themselves , or he might have decided to simply talk to them the aforementioned engagement with the Covenant AI perhaps being a tentative attempt at that . If he had , being a Holy Oracle , it ' s entirely possible he could have negotiated them simply leaving the Flood alone , though I don ' t see him allowing them to activate his installation without a Reclaimer .