Viewers may not have noticed Saturday night, but while doing the night news, CBS4 anchor Cynthia Demos started having contractions, said station spokesman Lee Zimmerman. The mother-to-be held on until the credits rolled. Three hours later, she gave birth to a boy she and her husband Matt Rubino named Gibson. The baby, who weighed in at 7 pounds, 10 ounces, joins 21-month-old sister Brooke at home. Demos is on maternity leave until December.