[quote][b]Posted by:[/b] grey101 A Halo ring going off isn't the same as a fusion reactor. You do notice that we see not a single ounce of debris from The battle of the Bias or the 300 year flood war? Even for the vastness of space since all of these actions happened within 60 light years of earth somebody would have seen something. A [b]tactical[/b] fire is going to destroy everything. ONI isn't going to be able to travel to a random point outside of the galaxy.[/quote] That is a good point, how didnt anyone see the halo activation ? Let me answer, the effect of the halo was made only around our galaxy, which is 100,000 lightyears. So, inorder to see in time 100k years ago, you have to look outside our galaxy, so logically, bungie choose the year 100k years ago for a reason, that reason is that so no one from the galaxy can see the halo activation.