Logan Guzman likes to pretend he's a superhero. One week he's Spiderman. The next he's Batman. Whichever hero he embodies, the 4-year-old's goal is always the same: He wants to save his father. Immigration and Customs Enforcement detained Logan's dad, Pedro Guzman, 30, in front of the family's Durham, N.C., home on Sept. 28, 2009. Logan and his mother, Emily, could only look on.