LOUISVILLE, Ky. -- Two days after a deadly UPS plane disaster, the mayor of Louisville, Kentucky, urged the public to attend a vigil Thursday to "share our heartbreak," while teams still worked to find or identify victims from the crash and subsequent firestorm.

"Our hope is that we have located all of the victims at this point. But again, we do not know," Mayor Craig Greenberg said.

The inferno destroyed the enormous plane and spread to nearby businesses, killing at least 12 people, including a child and three UPS crew on the cargo hauler. No one expects to find survivors in the crash at UPS Worldport, the company's global aviation hub.

The plane had been cleared for takeoff Tuesday when a large fire developed in the left wing and an engine fell off, said Todd Inman, a member of the N

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