Williams, who shared that the celebration coincided with her and her husband's wedding anniversary, shared light-hearted memories of her husband as well as the struggles he went through before his death

By Alexia Fernandez
Updated October 23, 2016 07:52 PM
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Rick Sanchez Photography

Susan Williams delivered a moving speech about her husband Robin Williams and his big heart on Saturday night in Chicago, Illinois, to celebrate the USO of Illinois’ 75th anniversary.

Susan, who shared that the celebration coincided with her and her husband’s wedding anniversary, shared light-hearted memories of her husband as well as the struggles he went through before his death.

Robin was posthumously awarded the 2016 Angel Harvey Heart of a Patriot Award by the USO for his dedication to entertaining the troops through countless tours of duty, including being the first celebrity to ever do a tour.

“He absolutely loved doing the tours as he loved all things military and respected and supported our troops,” a close friend of Susan and Robin told PEOPLE ahead of the event. “And of course, the troops loved him. He actually traveled to 13 countries and performed to approximately 89,400 troops throughout a span of more than a decade of USO tours.”

Susan was in Chicago to accept the award on Robin’s behalf, which also marked a rare public appearance for her in the two years since her husband’s shocking death. Read her full speech below:

–With reporting by Kara Warner