My grandmother quietly asked the gate agent to change her first-class ticket to seat 34A in economy. I had spent nearly a year saving for that ticket, hoping to give her the birthday trip of her dreams. But when I asked why she was giving up the luxury seat, she only squeezed my hand and whispered, “Some things are more important than being comfortable.” I had no idea what she meant.

My name is Sam, and my grandmother, Ruth Walsh, was turning eighty. She hadn’t flown in twenty-seven years, and she had requested one specific flight from Boston to San Francisco. I thought it was simply because she wanted to visit my mother. I didn’t know that seat 34A held a secret connected to my grandfather, a tiny silver pin, and a promise she had carried in her purse for almost three decades.