IMO, even if the Guardians and the HCPD tried to cover up Dragoon's death, I think the truth would have gotten out. IIRC, Liliya mentioned a bit about a newspaper having caught a picture of Alex over the defeated Dragoon, so there's definitely the media that knows. 

Also, kind of tinkering with the idea of having saved a sentient AI designed by the company Dragoon attacked as opposed to a regular person. I think my thought process was something like "Oh there has to be a good reason why Dragoon is trying to rob the place" and then to robots and then to yeah. Thoughts?