Pax 2016 Recruitment Center

In the last PAX 2016 there were sevaral tweets about some sort of an N7 recruitment center, telling things like "Do you what it takes", "Over 800 recruits" and even posting images of two women who were the first ones to get a perfect score.
Now, does anyone know what was THAT about?
What did people experience over there except for meeting some of the devs.

I searched for some pictures,videos or even any post about it but could not find any...