SCP-372 Idea
#1In SCP-372's document it says that if 372 escapes an alert would go of saying "that all personnel should watch for any brief flickering movements in the corner of their eyes, and to report immediately if one is sighted''. So maybe a short time after the first alarm goes off maybe a recorded message should come on saying that he breached containment. Just an idea
Don't worry about your son, he will be sent to the deep dark depths in no time.