Weekend Roundup

On the CBS News "Weekend Roundup" with host Allison Keyes; September 11th -- 20 years later.  Nearly 3-thousand lives were lost at the World Trade Center, the Pentagon, and aboard Flight 93. 343 firefighters alone died in New York City. We hear from Battalion Chief Jake Lemonda, former president of the Uniformed Fire Officers Association, about what that terrible day was like, and what firefighters need now. Monica Iken-Murphy, who lost her husband Michael, poured her grief into founding the non profit September's Mission Foundation, and fought to secure the World Trade Center site for what is now the National September 11 Memorial and Museum. She spoke with Allison ahead of this weekend's annual ceremonies. From air travel, to security to the immigration system, the attacks on September 11th changed the U-S forever. We hear from CBS's Steve Futterman, CBS's Peter King, and CBS's Lilia Luciano. We'll also hear from CBS's Jeff Pegues on what the attacks meant for the Mus