Fiberoptic technician Daniel Haire of Phoenix Communications kneels on a street as he talks with co-workers illuminating a man hole with a flash light in the Financial District of Boston, at dusk Thursday, July 21, 2011. The killer lurking in the shadows of the current heat wave may be the hot nights. (AP Photo/Charles Krupa)

Associated Press
Fiberoptic technician Daniel Haire of Phoenix Communications kneels on a street as he talks with co-workers illuminating a man hole with a flash light in the Financial District of Boston, at dusk Thursday, July 21, 2011.  The killer lurking in the shadows of the current heat wave may be the hot nights. (AP Photo/Charles Krupa)
Fiberoptic technician Daniel Haire of Phoenix Communications kneels on a street as he talks with co-workers illuminating a man hole with a flash light in the Financial District of Boston, at dusk Thursday, July 21, 2011. The killer lurking in the shadows of the current heat wave may be the hot nights. (AP Photo/Charles Krupa)
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