They never state whether the homeless “Transient” was an Illegal (PC Policing strikes again) but I will let you be the judge of that.
Personally, I would say 100% he is an illegal alien.
This was a tough situation to be put in from the perspective of the cop, but before you pass judgement, put yourself in their shoes.
WHAT IF that woman was your loved one and YOU had the gun? Would you chance the shot to try and save her life from this maniac? Of course you would, absolutely. That is why the Armed Citizen needs to practice hostage shoot scenarios regularly. Remember this story from Texas?
As far as this incident, sometimes there are no happy endings in the real world folks.