From the Fond du Lac Reporter:
The Milwaukee County Zoo will host Operation Freedom, a tribute for Armed Forces personnel and their families at 11:30 a.m. Sunday, July 1. The event includes a picnic at 11:30 a.m. and a program at 2 p.m. All Army, Navy, Marines, Air Force, Coast Guard, Reserves and National Guard members and their immediate families may attend to enjoy activities. They may also explore the zoo from 9 a.m. to 6 p.m., according to a press release from the local Veterans Service office.
Wristbands are required. Veterans who want to attend should collect their wristbands from [their local] Veterans Service Office. Information on parking and shuttle service is also available.
Details and directions in the Operation Freedom flyer [pdf].