Must be a tough time for these young people.

A sailor who tested positive for COVID-19 on March 30 was found unresponsive Thursday morning and moved to an intensive care unit at a nearby hospital in Guam.

The sailor, who had been in quarantine since testing positive, is one of more than 400 confirmed coronavirus cases from the aircraft carrier Theodore Roosevelt, NBC News first reported. The individual is the first to require hospitalization.

Speaking to reporters Thursday, Air Force Gen. John Hyten, vice chairman of the Joint Chiefs of Staff, said that in addition to medical professionals checking in twice a day, sailors are using a buddy system to monitor one another’s health.

“It’s not just waiting for the medical folks to come out every 12 hours,” Hyten said. “They’ve got buddies that are around all the time. This particular one happened from night to morning, but there were buddies around and the buddies found him.”

The sailor’s hospitalization comes approximately two weeks after the carrier was first ordered to port in Guam to stifle a COVID-19 outbreak on the 4,800-person ship.

On March 24 the Roosevelt first reported that three of its sailors had tested positive for COVID-19. The infected crew members were airlifted off of the ship as a precaution, but within one week confirmed cases in the ship’s tight quarters spiked to nearly 100.