Two former U.S. Navy SEALs and a retired Navy diver assessed the rescue efforts after four more boys were rescued from a cave in Thailand

The team of 12 young soccer players and their 25-year-old coach were trapped in the flooded cavern for more than two weeks after exploring it following a practice.

Several of the boys emerged from the cave on Sunday, about eight hours after 18 divers began their operation to free them.

"Sleep is a necessity but it's not a priority to these guys. Winning the mission, getting everybody out alive is," former SEAL Jake Zweig said on "Fox & Friends."

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Zweig said that rescuers are primarily focused on retrieving the rest of the boys and their coach "the way they rehearsed it."

Monsoon flooding had initially cut off the team's escape, and rescuers were unable to find them for more than a week.

"At the end of the day, they're not worried about anything but mission success at this point," Zweig said.

A former Thai navy SEAL died Friday while working as a volunteer in the rescue attempt.

Sgt. Major Saman Gunan passed out underwater while working to place air canisters along the way to where the team is located. Interior Minister Anupong Paojinda said Monday the situation remains precarious as new flooding shrinks the space in the cave. 

"I confirm that we are at war with water and time from the first day up to today," he said.

Watch more above.

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