HAVANA — At 104 years old, Becky McGuffey embraces each day on her own terms. Affectionately known simply as “MaGuffey" to many, she has lived a life stretching across eras, places, and generations – and remembers enough of it to share with a smile, a story, and a swipe of lipstick after every meal. When asked for the secret behind her longevity – which includes surviving a lightning strike in her backyard more than 50 years ago – the Havana resident winked, looked at her daughters and said with a soft laugh, “Keeping them in line.” While only about 0.03% of Americans live to be centenarians, McGuffey is remarkable in far more ways than her age. “She’s still pretty sharp,” her daughter Karen...