." >> in my heart, patrick john lyons will live on for now and for all eternity. dear family and friends, may i introduce you to the new love of my life, patrick matt lyons. >> this was for the football team hall of fame. >> reporter: this is that baby today. they say he walks just like pat, wets his fingers to throw a football just like pat. >> nice throw. >> nice throw. yes. >> reporter: even after being adopted as the bravest water boy. >> water. >> reporter: and hanging out withthis dad's buddy artie. even after years of visiting the firehouse -- >> we're here for breakfast. >> reporter: -- his mom often wondered how much h understood. >> this is the schedule on september 10th, and that's my dad's name. >> reporter: untntil the day little patrick announced he wanted to write this letter. >> dear dad. i just missed meeting you. you died on september 11th, 2001, and i was born 26 days later on october 7th. >> very smart child. >> i want you to know that mommy is doing a great job of loving me and raising me in a happy home. every september 11th we go to your fire