scene when firefighters arrived. little xavier dangling from a window. firefighters rushed to get a ladder extended when his grandmother couldn't hang on any longer. tonight, 75 people are homeless, thankful fire crews got to them in time. >> i think they did their job so well. well done. even though i lost everything i have. i have the greatest thing that can't be replaced. my life, my family's life. i thank god for that. >> reporter: a fine example of bravery under fire and a well deserved pat on the back from a hero just doing his job. ron mott, nbc news, boston. >> modest man thanking his lucky stahs. thanks for being with us. i'm brian williams. we