[@Deadnaut]Well, at some point on the conversation of being surprised and trying to find out why Chariot were there, you could bring up certain facts about your DZ. For example, the Hawk that happened to house Grant's sister saving you. He'll come across the wreckage soon, setting a side-mission afoot.

[@Silentsniper211]Coming across a Forerunner Shack-like construction, a Sentinel-like AI Construct will be there. In hope to succeed in something drastically Ground-breaking...it's your choice to either help it or stop it...there'll be a choice I can throw in when you find it. It's quite short, but the Decision is amazingly satisfactory, if chosen correctly...both with Major Consequences.