>>> and meet the usa knights. it's an extreme hobby. >> it's like chocolate, sex, everything rolled up into one. >> would you do this? or this? they say it's all for fun. but what happens when things don't go as planned? >>> but first, the "nightline five." >> i got it again. >> when we're having this much fun, why quit? and bounty has no quit in it, either. it's two-times more absorbent than the leading ordinary brand. watch how one sheet of bounty keeps working. while their two sheets just quit. why use more when you can use less? bounty, the no-quit picker upper. and try bounty nap >>> good evening. as we come on the air, president obama announces that the u.s. is in action in iraq again tonight. he addressed the country's humanitarian catastrophe and what it would take to trigger military air strikes. >> to stop the advance honor bill, i directed our military to take targeted strikes against terrorist convoys should they move toward the city. we intend to stay vigilant and take action if the terrorist forces t

>>> and meet the usa knights.