ABC's "Good Morning America" and the "CBS This Morning" show both aired moments of silence at 8:48 a.m. Tuesday, as did CNN, Fox News Channel and MSNBC.

NBC said that it aired other segments on "Today" about the Sept. 11 terrorist attacks, including an interview with a World Trade Center survivor earlier in the show. For its later West Coast feed, the network did show the commemoration of the first moment. Ceremonies took place at the World Trade Center and the White House lawn.

(Copyright 2012 by The Associated Press. All Rights Reserved.)