Like many families, life was busy with school, sports, and everyday routines. Then everything changed.

In the months leading up to his diagnosis, Aiden began experiencing symptoms that seemed easy to explain away at first. As the symptoms became more concerning and persistent, his family continued searching for answers, never imagining the news that was coming.

Within days, their lives became a whirlwind of appointments, specialists, scans, and difficult decisions. On May 13, 2026, Aiden underwent an extensive brain surgery to remove the tumor.

The surgery was successful, but pathology brought another devastating diagnosis. Aiden was diagnosed with medulloblastoma, an aggressive, fast-growing cancerous brain tumor that develops in the cerebellum—the part of the brain responsible for balance, coordination, and movement. Although medulloblastoma is one of the most common malignant brain tumors in children, it requires intensive treatment that often includes surgery, radiation, and chemotherapy.

After recovering from surgery, Aiden’s medical team determined that the next stage of his treatment would require proton beam radiation, a specialized form of radiation therapy that is not available in Canada. To give Aiden the very best chance at recovery while limiting long-term side effects, the family temporarily relocated to Winfield, Illinois, where Aiden has been receiving treatment while staying at the Ronald McDonald House.

For several weeks, Amy and Marc remained by Aiden’s side while Maddie and Sophie stayed home in Ottawa, surrounded by family and friends who helped keep life as normal as possible. As Aiden’s treatment progressed, his sisters were able to join the family in Illinois for the final weeks of his journey there, allowing them to spend precious time together, support one another, and simply be a family during one of the most difficult chapters of their lives.

Life in Winfield has been filled with both extraordinary kindness and unimaginable challenges.

Every weekday, Aiden undergoes proton beam radiation treatment. Alongside radiation, he is also receiving chemotherapy. The treatments have brought increasing fatigue, and the heartbreaking reality of losing his hair. Despite everything, Aiden continues to smile, encourage other children, and face each day with remarkable bravery.

Even during treatment, he has found moments of joy. He has visited therapy dogs, made friendships with other children staying at Ronald McDonald House, become a role model for younger children, continued practicing his hockey skills whenever he could, and qualified for a wish program that will provide him with new golf clubs and professional golf lessons—something that gives him hope and excitement for the future.

Throughout this journey, Amy and Marc have remained focused on finding joy in the little moments. Whether it has been family workouts, celebrating milestones, making memories together, or simply sharing a meal after treatment, they have shown incredible strength, resilience, and gratitude every step of the way.

Back home, something extraordinary began to happen.

Friends, family, neighbours, teammates, classmates, schools, local businesses, sports organizations, and complete strangers came together to remind Aiden that he is not fighting alone.

The community organized a GoFundMe campaign to help ease the financial burden of treatment away from home. Volunteers coordinated a meal train to support the family before they left and upon their return. Cheer bows, bracelets, stickers, and cookies were created and sold in Aiden’s honour. Cheer Sport Sharks Ottawa wore green. Sports teams dedicated games to him. Friends and families wrote letters and sent packages. Friends shaved their heads in solidarity through the Buzzin’ for Aiden Challenge. Businesses hosted fundraising events, and countless individuals found their own unique ways to show up for the Gagnon family.

Every act—big or small—sent the same powerful message:

You are not alone.

What began as a grassroots movement of love and support quickly became known as Aiden’s Army.

But as the weeks passed, something else became clear.

Time and time again, Amy and Marc spoke about the incredible compassion they had experienced while staying at Ronald McDonald House in Winfield, Illinois. They were overwhelmed by the kindness of the staff, volunteers, donors, and complete strangers who made sure they had meals, a comfortable place to stay, opportunities to connect with other families, and one less thing to worry about while they focused entirely on Aiden.

They began asking, “How can we give back?”