It seems like this is starting to take on an always-carry-at-home theme, so I'll try to bring it back around.
The 15 year old kid was not carrying and repelled a home invasion with two shots from a .22.
Ah, but if the kid was carrying - it may have only taken a single shot or no shots at all.
"With great power, there must also come great responsibility." - Stan Lee
"All that is necessary for evil to triumph is for good men to do nothing." - Edmund Burke