I picked "Patrick" as my confirmation name when I was 10 because even then I had an inchoate sense that I had a vocation to teach people about the Trinity, specifically. As crude an image as it had to be for his illiterate, heathen audience, I could not get his three-leaf clover out of my mind. I still can't. Every time I see clover I am reminded of my vocation. I doubt I have fulfilled it as intended.
That's why I pray with the Breastplate and many similar aids. To fulfill my vocation as intended, which is doubtless a greater thing than I see, I must press on with my spiritual journey with as much protection as possible against whatever would terrorize me out of it. As the world grows ever more nihilistic, we all need to be doing that. You have many TSA agents to pick from. Let us thank God for the one we celebrate today.