Jay DeMarcus of Rascal Flatts is a father once again. The 41-year-old singer’s second child, a son named Dylan Jay DeMarcus, was born on Friday in Nashville. Jay’s wife Allison and the baby are “doing well in a local hospital”, a band rep said. Dylan joins 19-months-old sister Madeline Leigh. The proud father almost missed his birth. Jay was in Detroit for a Friday night concert at the DTE Energy Music Theater. The rep said “He got up this morning, jumped on our airplane, flew home, and they had the baby. Jay flew back to Detroit via helicopter in time for Rascall Flatts’ scheduled 9.30 p.m. concert, still wearing hospital scrubs and a hospital wristband.