I was worried about traveling alone, But I got to thinking I always have my phone that there should be a app for that :)
well I found one, "ICE Card" the app has a widgets with a button, If I need help I just press and my phone calls 911 and any person I pick. they all get a message that I need help and all get GPS were I am.
I know it works because when I was setting it up I hit the button,,, well phone went nuts, family called me, 911 called me 4 times and they sent out 2 police men. to check on me. Boy that was fun day.
So now I feel a little better about traveling alone.