Joshua Dawson, 35, died in Phoenix on December 18, 2014, after an officer-involved shooting. Police had been called to a scene where a man was reported to be throwing rocks and knives at officers; the confrontation escalated and officers fired. Dawson was wounded by gunfire, taken to a hospital, and died that same day. His family has publicly questioned the circumstances that led to lethal force being used.

What details about the moments before the shooting, the officers involved, or any witness accounts are still missing that could help clarify what happened?