PHILADELPHIA (WPVI) -- As he pulls open a series of file cabinets, Donald "Ducky" Birts is a man on a mission. He's searching for a booklet that details his place in Philadelphia Black history.

Donald "Ducky" Mallard (played by David McCallum) had been in NCIS since it first began in 2003. Article continues below ADVERTISEMENT. He was the team's lovable medical examiner, who continued to ...