meticulous. i asked one of the people at phoenix international, does it drive them stir crazy? he said, yeah, it can do that. they look forward to meal time because it breaks up the monotony. we're cringing on everything these guys are listening to. >> what kind of rotation schedule do they have? how long can they basically keep it up? >> they're working 12-hour shifts on board the ocean shield. one shift goes from midnight to noon. the other one goes from noon to midnight. who knows, it's indefinite. they've been out there since march 31st. imagine that, wolf, 12 hours a day, and you're just doing nothing but listening. most of the time in silence. europe just hearing nothing but you're blocking out everything else. could you sit there for 12 hours and just hear nothing -- >> no. >> and look at a monitor? >> i admire these people who can. obviously, as you point out, this is incredibly important -- >> very important. >> and those batteries are quickly, quickly dying, if they haven't died already. they might not be hearing nothing anymore. they'll work on those pings from the original location and