ON THIS DAY: Peter Jennings anchors ABC News coverage of the Lockerbie bombing on December 21, 1988, that killed 243 passengers and 16 crew on board Pan Am Flight 103 and another 11 people on the ground when the Detroit-bound transatlantic flight crashed in Scotland. http://abcn.ws/2CPXdBp | ABC World News Tonight with David Muir

HONORING PETER JENNINGS: Today marks 13 years since the passing of ABC News anchor Peter Jennings, who for more than four decades guided us through the most difficult of times, and for many viewers his legacy lives on in his honest approach to sharing his lung cancer diagnosis. David Muir reports. https://abcn.ws/2KGA1sY | ABC World News Tonight with David Muir

ON THIS DAY: Twenty years ago, ABC News anchor Peter Jennings died at age 67. Remembering an icon: https://abcnews.visitlink.me/DS4r42 | ABC News

REMEMBERING AN ICON: World News Tonight anchor Peter Jennings died on this day in 2005. He would have turned 80 this year. In 2015, David Muir highlights his memorable moments in broadcast and how his life changing legacy continues. #PersonoftheWeek https://abcn.ws/2OOjBBU | ABC World News Tonight with David Muir