It is very possible that Jordan's associates stories will conflict with each other. If Dunn is telling the truth, one of them may be turned.
Not likely to happen.
If they had a gun in the vehicle that night when Dunn opened up on them they would have and should have used it.
They had every right to that same self-defense that Dunn claims he had.
But they retreated. They withdrew. They chose wisely.
And as they were retreating he kept firing.