Sen. Barack Obama arrives at the private funeral service for Tim Russert. MSNBC has shown periodic live shots from outside the service this morning. Besides Obama, Sen. John McCain and the Today show's Matt Lauer and Meredith Vieira were shown.

NBC News' Rehema Ellis is giving reports from outside the Kennedy Center, where the televised memorial service will take place at 4pmET today. TVNewser will provide continuous updates throughout the service this afternoon.