Was the "homeless person" named Mohammed, by any chance?
"He estimated it would take "several millions of dollars and several years" to reassemble and test the intricate network of custom-built switch relays that were destroyed in the blaze, which officials believe began when the homeless person - who has not been found - set fire to wood and refuse in a shopping cart in the tunnel about 50 feet north of the Chambers Street station."
But then I read further, and thought: "Who wants to sell the City another computerized signaling system?
The fixed-block signaling system has been in use since the New York subway's inception in 1904. The transit agency has invested $288 million on its first computerized signaling system, scheduled to make its debut on the L line in Brooklyn and Manhattan in July. Computer-based train operation has been a goal of transit planners for decades, but since 1982 the transit agency has focused its capital spending on basic maintenance.