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ALEXANDRIA, VA - AUGUST 17: Reginald McKinnon wipes away tears after talking about his daughter's death from hyperthermia during a news conference to launch the 'Look Before You Lock' campaign against leaving children inside parked cars at the Campagna Center at George Washington Head Start August 17, 2012 in Alexandria, Virginia. In 2010, McKinnon accidentially left his 17-month-old daughter in his car while he went to work and she died from hyperthermia. 23 children in the United States have already died from hyperthermia this year after being left in hot cars. (Photo by Chip Somodevilla/Getty Images)

ALEXANDRIA, VA - AUGUST 17:  Reginald McKinnon wipes away tears after talking about his daughter's death from hyperthermia during a news conference to launch the 'Look Before You Lock' campaign against leaving children inside parked cars at the Campagna Center at George Washington Head Start August 17, 2012 in Alexandria, Virginia. In 2010, McKinnon accidentially left his 17-month-old daughter in his car while he went to work and she died from hyperthermia. 23 children in the United States have already died from hyperthermia this year after being left in hot cars.  (Photo by Chip Somodevilla/Getty Images)