Gravitas, the response is quick. A private message from your father.

@Gravitas: Meet me at the Atlas Vance Monument in ten minutes. I'll come alone, except for my transporter. Bring whoever you need to. I'll understand.
The Atlas Vance Monument is eight or nine minutes away by flight. It's dedicated to Atlas Vance, a member of the Watchtower who served around the same set of years that Gravitron did. Atlas saved the world countless times, and when he died Halcyon City honored him with a statue in the middle of a park. This time of night it'll be secluded, and the park forest will dampen noise. Good for a covert meeting.

And, you suspect, there are sentimental reasons for Gravitron choosing that location.

Spoiler: OOC
Show
Clear Insecure and Afraid. You definitely opened up, and reaching out to your father is DEFINITELY reckless.

Funny enough, I actually had plans for him to contact you in a few days anyways, so this just speeds up my timetable