[Steely Tom]

There were multiple shots in a short period of time but even one shot can sound like multiple shots due to echo.

So if two were due to echoes, and the other two were not from echoes... there were at least two shooters.

[fso301]

So if two were due to echoes, and the other two were not from echoes... there were at least two shooters.

What then were their most likely positions?