>> yuccas: the holidays are a time for giving and who better to be on the receiving end than a military family? cbs' janet shamlian reports. >> reporter: it's been years of hard knocks for geisha alvarez, so she never expects good news. >> you were nominated by multiple friends and family, and we're here to decorate your house. >> are you serious? >> yes. >> reporter: yards of garland, hundreds of lights, thousands of dollars in decorations. >> goooo, team! >> reporter: the transformation is under way. are you ever a little worried when you knock on somebody's door sort of unannounced? >> especially someone you don't know if they know you're coming. >> reporter: the christmas decor company sells the trimmings, but every year they do 200 homes for free, often as a surprise for first responders and military families. >> we have three girls, five boys. >> reporter: how do you do it? >> i don't know.