This 2013 photo provided by Miguel Serrato shows twin sisters Marisol Serrato, 17, left, and Marisa Serrato, right, with their sister-in-law Ivette Serrato during a wedding in Riverside, Caif.  The twins were part of the group more than 40 high school students whose trip to visit a college turned tragic when a FedEx tractor-trailer veered across a grassy highway median and slammed into their bus in a wreck that left 10 people dead, authorities said. Marisa was one of the twins on the bus that crashed but is still unaccounted for. Marisol was on another bus that wasn't in the accident. (AP Photo/Courtesy Miguel Serrato)
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