ANN ARBOR - Members of University of Michigan's sorority alpha Kappa Delta Phi who were responsible for popping balloons that sparked an active shooter alert on March 16 published an apology in the Michigan Daily on Sunday.
According to the letter, the group was popping balloons as part of a team-building exercise. They acknowledged the delay in publishing the apology, saying they needed time to process their "feelings of guilt and disbelief," as well as taking responsibility for their actions.