Former Navy SEAL rescue diver on Baltimore bridge collapse: 'It's a recovery operation'

Former Navy SEAL rescue diver Jake Zweig joined "Fox & Friends" Tuesday morning to discuss the Francis Scott Key Bridge collapse as search and rescue operations are underway in Baltimore, Maryland.

Two people were rescued from the water, one in critical condition, according to officials. Zweig said the big question facing U.S. Coast Guard personnel and other first responders is whether anyone could survive for several hours after their cars plummeted into Baltimore Harbor. 

"I'm going to be honest with you, there's not a lot of hope in my mind at this point. It's a recovery operation," Zweig said.

Baltimore Fire Chief James Wallace said authorities “may be looking for upwards of seven people” but said that number could change and other officials wouldn't give figures. It was not clear if the two rescued were included in the seven cited by the fire chief.

Authorities said a crew of unknown size was working on the bridge at the time of the collapse and that sonar had detected cars in the water, which is about 50 feet deep. The water temperature was about 47 degrees Fahrenheit  before dawn Tuesday, according to a buoy that collects data for the National Oceanic and Atmospheric Administration.