Maricela Pena, center, pushes a relative's baby in a carriage while picking up four of her children at Lewis and Clark Elementary School in Wenatchee, Wash., Thursday, Sept. 20, 2012. M

 

              Maricela Pena, center, pushes a relative
Maricela Pena, center, pushes a relative's baby in a carriage while picking up four of her children at Lewis and Clark Elementary School in Wenatchee, Wash., Thursday, Sept. 20, 2012. Many were wearing masks and covering their faces as the city continues to be chocked with smoke from nearby wildfires. At left, teacher Lucy Garcia wears a mask while on crossing guard duty. Garcia said the masks have been donated to the school and she's been wearing hers when outside since Monday. (AP Photo/The Seattle Times, Ken Lambert)