When real potential security threats are present, unless you’ve practice handgun skills extensively and shot in individual or group training scenarios, all of that prior training, though useful to a degree, was done in the abstract. When facing a known potential threat, for the average CCW holder with basic training, additional training must begin immediately. Here are some basic steps to begin.
Pray individually and as a family. Start reading the works of David and about David together. Discuss his reliance on the Lord and his war/defense tactics and strategies. The Lord of Hosts is not a pacifist, so read the Holy Bible in a new light.
And everyone 16 and up read The Gift of Fear by Gavin De Becker.
Due to that abstraction, I recommend starting back at the beginning with a basic handgun course for husband and wife and any grown children or other adults in the home. Do the training together. This builds a sense of group purpose and team cohesion, helping to know who is capable and to what extent in order to support each other.
Next, at least take intermediate-level handgun training together. The family can take a training progression to the level they feel necessary, all the way to tactical kill-house, vehicle handgun use, scenario training, etc., if desired.
Fourth, while you’re training, you must develop a home security plan. Do regular walkthroughs of your home at night with the lights off to get used to the layout with limited or no light because you must practice your plan with lights on and with lights off. Without practice, you are back in the world of abstraction again. Plus, what’s in one adult’s mind may not be what the other is thinking and planning, which can get you or your children killed. If you have young children, you must involve them; sorry, no exceptions; this must be done. If children are too young to remember and follow instructions to participate, then the plan must include covering them. To lessen the shock to children, you can start with a fire plan, which every household, eh-hem, should already have. Refine these plans as you learn and practice.
There are home-security consultation firms. I have no experience with any, but we’re supposing that quality ranges widely and some prices may be outrageous.
Additional reading for serious-minded adults can include On Killing by Grossman and Left of Bang by Van Horne. These books are not for everybody and are by no means Christian literature.