David Tassoni of athenahealth embraces a teammate after finishing the three-day, 180-mile Trek Across Maine on Sunday afternoon. David LeClair, a 23-year-old athenahealth employee from Watertown, Mass., was killed Friday morning shortly after the beginning of the fundraising event in a collision with a tractor-trailer truck. &quotI'm so proud of being part of this whole group,&quot Tassoni said at the trek's emotional conclusion.
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