Swiss policemen aboard a boat search for two missing children on Lake Lucerne near the town of Buochs July 21, 2009. Since last last Friday eleven year old Jessica and the four month-old Nils are missing after they tried to cross a ford of a small confluent of the Engelsbacher Aa river near the village of Grafenort some 15 kilometres (9 miles) south of Buochs. REUTERS/Arnd Wiegmann (SWITZERLAND DISASTER)
REUTERS/ARND WIEGMANN