Please fasten your seatbelt, make sure your tray table is in an upright and locked position, and prepare for delivery. A passenger on a Delta Air Lines flight from Atlanta gave birth to a healthy 5 1/2 pound (2. 5 kg) girl just before the Boeing 737 landed at Portland International Airport in Oregon on Friday night. Two paramedics who happened to be on the flight assisted, borrowing blankets from other passengers and using a shoelace to tie off the umbilical cord. Baby Brielle Renee Blair came...