If I end a sentence with initials do I add a second period? [duplicate]

Question

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• Punctuation around abbreviations 5 answers
• When “etc.” is at the end of a phrase, do you place a period after it? 6 answers

If a sentence has someone's initials as the last word, do I add a second period?

Example:

And that was the last they saw of T.J.

or

And that was the last they saw of T.J..