Benchmade auto opener...and about 100 years in various hand to hand training....also, condition YELLOW awareness, eyes up and alert, looking around and even making eye contact with anyone lurking about so they know I see them. Also, I teach part time at a Kenpo studio (when I'm CONUS long enough) here and tell students to hold their car key in their hand in such a fashion that it can be used as a weapon. I think the most important thing, gun or not, is condition YELLOW alertness of your surroundings and those around you.