At approximately 1:50 pm CDT (18:50 GMT) a switch management card at University of Chicago failed, taking down a portion of the Science DMZ that serves US ATLAS Midwest Tier 2, ATLAS Connect, OSG Connect and other CI Connect services, UChicago ATLAS Tier 3, and a server for the South Pole Telescope. System and network engineers responded immediately. As of 3:00 pm CDT (20:00 GMT), all systems are back online and operating at full speed/capacity. The failed management card is being investigated by UC network staff and the vendor. No further interruptions are expected.