This is an excellent summary of all the key points! I like that Lt. Chaney also included being prepared to give responding officers a brief statement. If you have been required by the circumstances to use force against your assailant, then "clamming up" to the police can make you look guilty--but the urge to give all the small details in order to justify yourself can land you in hot water.
Massad Ayoob, one of the most respected persons teaching self-defense to police and ordinary citizens advocates the brief statement in a setting where you have had to threaten or actually use deadly force in the defense of yourself or others.
(1) Describe the active dynamic such as, "That man forced his way in; I thought he was going to kill us. I was forced to defend us." Do NOT lead with "I shot him." Avoid a detailed description of events.
(2) Describe any accomplices/perpetrators who fled and, if you know, in what direction or by what conveyance.
(3) Point out any major evidence (perpetrator's dropped weapon or signs of break-in).
(4) Point out any witnesses before they scatter.
(5) Indicate that you will sign the complaint and cooperate with law enforcement.
(6) Then invoke your right to silence and to an attorney. Do not submit to detailed questioning.
It is very important to recognize that your perceptions of time, distance and size WILL be distorted by the effects of stress and respectfully decline to give details until you have had at least one good night's sleep AND spoken to your attorney. This is to avoid being entrapped by "the criminalization of imperfect memory". Good, honest people have caused all sorts of legal problems for themselves via well-intended verbosity: "He was right on top of me with a huge knife!" (Later evidence shows he was 15 feet away with a 3" knife.) Such distorted perceptions can lead to the impression that you are not honest and are trying to cover up something.
Give the police enough information to understand your defensive situation in broad strokes and give them any information they may need immediately to pursue and apprehend accomplices. Then politely invoke your right to consult an attorney and to calm down before giving details. Avoid excitedly pouring out details that may be distorted by your stress-altered perception of time, sequence, distance and size of objects.
Finally, ALWAYS call 911 as soon as you can safely do so, even if the invader ran off as soon as he saw your gun and no one was actually injured. Police need to know in a timely fashion that a home invader/burglar is active in the area.
And, yes, that is a very cool door lock! Remember that the best locks only work if they are engaged. My wife is well-drilled in keeping all exterior doors locked. So, I carry a house key on me at all times, to avoid being inadvertently locked out.