If Giffords was shot from behind was she the intended victim or running away as the judge or another was shot first?

Supposedly there is video of the shooting that hasn't been released that could answer some of the questions...

Giffords' brain benefits from benign route of bullet

"This wasn't a little grazing wound to the brain. This was a devastating wound that traveled the entire length of the brain on the left side," said Dr. Peter Rhee, trauma medical director at UMC.

The bullet appeared to have entered the back of the head and exited above Giffords' eyebrow, he added.

Read more:
http://www.reuters.com/article/idUSTRE7082UY20110109