Investigation underway after deadly fire at CFB Wainwright

A tattered reminder of the pain and grief left behind in Wainwright. The town's hospital, the first to care for many of the injured Saturday. Emotionally, this event is one that will stay with us our entire careers. It's heartbreaking. Most of the wounded airlifted out to hospitals across Alberta. Corporal Sean Hyatt was among them. He's in the ICU right now. He's on a breathing machine. They're trying to check his lungs, see if any damage there. He's got about 50% burns on his body, his face, his arms, his hands, his legs. Those injuries sustained during a live fire training exercise at CFB Wainwright. Nearly 20 soldiers remain in critical condition. Four others died that day. We were wearing our rugby jerseys here. Leaving family and friends across Canada shaken. It still doesn't feel real. It still kind of felt like, oh, I'm sure he'll just be okay. I'll hear from him in a couple days or something. As a vigil grows outside the base here, investigators inside trying to piece together how this tragedy could have happened. The fence line around CFB Wainwright makes it clear it's dangerous in there. But investigators here on the ground are looking into what caused the grass fire on the other side of that fence and what turned it so deadly. Officers on the ground knew a fire was burning here on Saturday. They knew it was windy too, but were caught off guard when it shifted quickly. This is not the moment. Canada's defense minister says finding out how that happened will take time. I'm going to leave it right now to the chief of defense, the commander of the army, and the professionals who conduct these processes to take the time they need to evaluate. This happened 48 hours ago. People in this town wrestling with a different question. How do you move on from a tragedy that's shaken your community to its core? Aaron Collins, CBC News, Wainwright, Alberta. Thank you.