Global Agenda 's Sandstorm patch is pretty sizeable, and the Hi-Rez team recently produced a video developer blog that provided an overview.
The newest video follows in that same vein, but is a bit more specific. Executive Producer Todd Harris and Lead Artist Chuk Vinson sit down to explain Defense Raids, 10-man raids in which you are tasked with the protection of your dome city.
Every now and again, the city's alarms will go off to indicate that an attack by robots is imminent. High-level players can work together to prevent it from happening by trying to keep the enemy from breaching the defenses and destroying the power core. If you succeed, you get a big boss fight and big loot at the end.
Follow along after the jump to see the video firsthand.