Guns in the Hands of the Mentally Ill-Thousand Oaks Mass Shooting

We live in a scary world. Of course, other times in history were scary too, but in the great country of America, there are too many mentally ill people who are in possession of guns and most of them are owned legally. So really no where is safe.
It's quite the conundrum. How do you get guns out of the hands of the mentally ill, while allowing law abiding citizens to have legally owned guns? This is the dilemma.
Yesterday as I watched the horrific news of yet another senseless mass shooting in southern California, in Thousand Oaks and watched as a father broke down after learning his young adult son, Cody Coffman had been killed, I once again was in disbelief.
In this modern world of technology, there should be a way to keep track of the mentally ill who show violent tendencies and make sure they do not own guns or have access to them.  It seems so simple and yet at this time in history, there is no follow-up (or follow-ups) when a person is showing signs of mental illness and has been evaluated. (At least in this case there didn't seem to be.)
I don't get it. People are suffering, innocent people are dying at the hands of people who should not own guns. Fathers and mothers, relatives and friends are crying, losing innocent children and young adults in senseless gun violence, as the holiday season draws near.
It's scary, senseless and sickening.
NJA