Lie in wait

Candidates who have arrived to take an Indian railway recruitment examination, sleep at night at the railway station in Allahabad, India, on Sunday. About 130, 000 candidates are appearing for the exam at numerous centers spread across the city. India's mammoth rail network is truly a mass transportation system, with its 40,000 miles (64,000 kilometers) of railway track cut through some of the most densely populated cities, flanked by shanty towns, in the nation of 1.2 billion people. (AP/Rajesh Kumar Singh)