(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
Dorian Johnson
But @placeholder said the officer grabbed Brown by the neck and drew his gun, eventually shooting Brown.
Michael Brown
Michael Brown
Brown
Brown
"@placeholder just bum rushes him, and just shoves him back into his car, punches him in the face and then of course Darren grabs for his gun and Michael grabs the gun," Josie said.
Michael Brown
Michael Brown
Brown
Brown
Both sides agree that @placeholder ran and then turned back -- the question is whether he turned to attack or surrender.
Darren Wilson
Darren Wilson
Wilson
He just started coming at him full speed so (@placeholder) just started shooting and he just kept coming," Josie said.
Darren Wilson
Darren Wilson
Wilson
That detail could support @placeholder's claim of a struggle inside his patrol car.
Missouri
Missouri
Different states have different numbers, but there are 12 members on the @placeholder grand jury.