The mere presence of this most lethal tool actually influences the suicidal person's decision by making death too easy, quick and certain.

CNN: Guns and suicide: One mother's heartbreaking tale

But the sprinter's family denied BBC reports Monday that he's suicidal as he awaits trial in what prosecutors say was the premeditated death of Steenkamp.

CNN: Pistorius not suicidal, family says

His death inspired Congress to pass a law mandating better services for suicidal veterans.

FORBES: The Military's Fight Against Soldier Suicides