Massive search is underway in a Chicago preserve for a United Airlines executive, 49, who has been missing for more than a week after going out jogging

A massive search is underway in a Chicago forest reserve for a United Airlines executive who has been missing for more than a week after going out jogging.

Jake Cefolia, who is senior vice president of global sales for United Airlines, was last seen on August 6. 

The 49-year-old, who is believed to be a father of two, was reported missing two days later. 

Police said they managed to locate his car at the Waterfall Glen Forest Preserve in suburban Chicago. 

A search team made up of 100 volunteers and K-9 units searched the park over the weekend. 

Searches over the weekend did not yield any responses, authorities say.

They plan to search the preserve again today.  

Authorities say Cefolia often went running but hadn't made contact with his family or friends. 

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Police said they managed to locate his car at the Waterfall Glen Forest Preserve in suburban Chicago. They have been searching the preserve since Friday but have so far not found anything

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Searches over the weekend did not yield any responses, authorities say. They plan to search the preserve again today

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'He commonly ran, we have 9 or 10-mile loop here at the forest preserve, so he's an athletic 49-year-old gentleman,' Forest Preserve District of DuPage County Chief David Peterson told ABC 7. 

'We don't know for sure he's still at the forest preserve, but at this point there's been no contact with family or friends.' 

United Airlines said they had been in contact with Cefolia's family and were assisting police with their investigation. 

'Our friend and colleague, Jake Cefolia, SVP of Worldwide Sales, was last seen Thursday evening, August 6th. We're concerned about his well-being and have been in touch with Jake's family over the last couple of days to offer them our support. At the request of the family, we won't be releasing any additional details at this time,' the airline said in a statement. 

'We have also been in touch with law enforcement and expressed our desire to do everything we can to help them as they lead the effort to find Jake.' 

Cefolia has worked with United since 2015 and assumed his global sales executive position in 2018.  

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The 49-year-old, who is believed to be a father of two, was reported missing on August 8

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Authorities say Cefolia often went running but hadn't made contact with his family or friends in more than a week