According to the DC Police Chief: 'Best Option' Is For Citizens To Take Out Paris-Style Attackers.
If it works on "Paris-Style Attackers" I guess it would work on "Teenagers."
Oh never mind, legal handguns are impossible to get in D.C. Only thugs and LEO's have guns in D.C.
When you can't blind them with brilliancy, baffle them with bullsh!%.
The look on their face is worth the effort.
:-)