they say it's not about mood, but obviously fatigue can affect mood and the new zealand air force is trying to work hard to prevent fatigue and keep spirits up. at the moment they are positive. the air force wants it to stay that way. >> matthew, thank you. and i should point out, again, matthew in perth, australia, we're reporting to you from guinea, africa, quite an extraordinary live shot there. we've got more from guinea, africa, in a little bit. and anthony bourdain, my pal, will give us a sneak peek on "parts unknown." gunderman group is a go.