(KFOR) When Tony Hall of Oklahoma City walked into work, he had no idea he would drop dead that day.
Suddenly, without warning, he slumped over the tractor he was driving at Northwest Building Supply.
His family said they were told he suffered sudden cardiac death.
That's when fate took over.
A fellow employee, Brian Lueninghoener, unexpectedly walked into the building.
That's when everything changed.
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