To follow your comment, numerous veterans un-able to get support locally through their VA office have used the line as a last ditch effort to get support. Knowing you are suffering from a mental health issue isn't the same as being suicidal.
>On the night of February 2, 2010, suffering from sleep deprivation, he inadvertently phoned the National Suicide Hotline when dialing a number he thought to be a Veterans Crisis Line.