Couldn't think of a title, but AA's and stuff

“We’ve never seen this type of offensive reaction from any of the other installations.”- Del Rio
So they’ve been to the other Halos, and fought the Sentinels. Maybe they built the new AA’s from the Forerunner tech there? Does Wargames take place before or after the campaign? Just curious.
So, the whole Flood thing really happened, right? For there to be a simulation, it had to have happened! Right? Right?!