"I'm real overwhelmed," she said as baby Zahiriah, wrapped in a pink blanket with embroidered elephants, slept in a car seat. "We're at it again. Last year we had to do it. This year we have to do it. And you have to be around all sorts of people -- strangers. It's a bit much." Before leaving their home in Atlantic City, John and Robshima Williams of packed their kids' Halloween costumes so they could go bunk-to-bunk trick-or-treating at a shelter. Her 8-year-old twins are going as the Grim Reaper and a zombie, while her 6-year-old plans to dress as a witch. "We're just trying to make a bad situation good," the mother said. "We're going to make it fun no matter where we are." ___ Breed reported from Raleigh, N.C.; Contributing to this report were AP Science Writer Seth Borenstein in Washington; Katie Zezima in Atlantic City, N.J.; Wayne Parry in Point Pleasant Beach, N.J.; and Dave Dishneau in Wilmington, Del.