USO of Illinois, through the support of Alderman Brendan Reilly of the 42nd Ward, Boss Bar give summer its last “HOO-AH!” by rocking the block at Clark After Dark presented by Jewel-Osco. USO of Illinois’ annual Clark After Dark block party celebrates America’s military service members and their families. In 2023, they will be celebrating their 15th anniversary! Proceeds from the event benefit the USO of Illinois program and services that serve more than 326,000 military personnel and military families of Illinois. This event is produced by Star Events.