Greater Chicago Union Day attacks

The Greater Chicago Union Day attacks, sometimes shortened to the Union Day attacks were three coordinated terrorist attacks carried out by terrorists of the extremist group. In the early morning of June 7th, seventeen terrorists conducted simultaneous attacks on the Greater Chicago Industrial Zone, Deering Refugee Center, and the Uptown Refugee Processing Center, detonating improvised explosives within the Industrial Zone as a distraction. While emergency response services rushed to the Industrial Zone, four suicide bombings occurred at the two refugee centers, severely damaging the complexes while armed Sapien Sunrise members stormed both buildings. 
UNSC Military Police guarding the complexes responded to attack but quickly found themselves outgunned. An hour long standoff occurred before the URNA National Guard were deployed to the complexes, surrounding the Sapien Sunrise inside. The surviving Sapien Sunrise members then detonated eight more bombs attached to their bodies, further damaging the complexes and killing or wounding both humans and refugees. 
The aftermath of the bombings and firefight resulted in thousands of casualties, marking the deadliest non-Covenant attack on URNA soil in centuries. General response to the attacks resulted in elevated security alerts among UNSC forces stationed in the URNA, prompting complete lockdowns of Covenant refugees centers in Los Angeles, Houston, and New York City. Following the Sapien Sunrise's admittance of responsibility, and Ebon Sobeck's ultimatum, SPARTAN-IV fireteams were deployed to these refugee centers as part of elevated security measures. 
Despite these measures, the ultimatum expired resulting in attacks on these refugees centers a week later albeit less successful.
Category:Commonwealth Events