problem, the navy pulls the equipment out and brings it here. >> each component of this system is evaluated for its own performance. the lab will put all of them together to see how it did as a system. >> they can replicate the exact flight profile where a problem was reported to determine what went wrong with the system. >> so this chamber is the simulated cockpit. so this chamber would be the pressurized portion of the aircraft. this chamber, as you'd can see, has two breathing simulators, mechanical breathing simulators. >> we have selected a lot of data. now we're getting into the analysis. that is starting to inform some of the things we think we need to address. >> sarah joiner was hand picked by the team. she's been on the job since late