(CNN)After months of anticipation, a grand jury's decision on whether to indict a Missouri officer for fatally shooting an unarmed  black teenager could come at any moment. And when it does, anything could happen in the tinderbox that is Ferguson, Missouri. But how did we get to this point? Here are six things to know to get up to speed on the case: On August 9, 18-year-old Michael Brown and his friend Dorian Johnson were walking in the middle of a residential street when a white officer, Darren Wilson, pulled up and told them to get out of the road.
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A grand jury could decide at any moment whether to indict Officer Darren Wilson
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Wilson fatally shot Michael Brown, an unarmed African-American teen
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The officer said Brown started a physical confrontation
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Autopsies reveal Brown was shot at least six times
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He just started coming at him full speed so (@placeholder) just started shooting and he just kept coming," Josie said.
Different states have different numbers, but there are 12 members on the @placeholder grand jury.