captain traithwaite. i took a tour of the bridge. i also met buck.ead chef hatfield from north carolina. he and his staff serve anywhere from 1,200 to 1,700 meals a day. when i go home, if i've gained any weight -- can i call and complain? >> you can call it mercy hips instead of mercy ships. >> okay. the entire crew, including the heroic doctors and nurses, are all volunteers. nearly half of them from the united states. you never know who you might meet, including the security team made up of six gurkhas. believe me, the ship's in good hands. ♪ on patient screening day, more than 7,000 people lined up in hopes of getting care. all patiently waiting to be seen. ali is one of the amazing screening nurses. she determines if doctors will be able to treat them. >> hi there, sweetie. [ speaking french ] do you want to come with me? okay. >> she told me about the joy she feels when she knows she will be sending someone through who mercy ships will be able to help. >> there is nothing compares to that. when you see a kid or patient come up who you know we a