A Navy fighter collides with a North Korean jet, and the U.S. crew is missing. And a defense contractor who saved Leo's life runs into trouble with his latest helicopter project. Meanwhile, a conservative congressman proposes a tax break for stay-at-home moms, which makes Josh apoplectic; Abbey wants to volunteer at an inner-city medical clinic; Barlet reluctantly sits for an official portrait; and C.J. decides to confront the cable-news talker who branded her "chicken of the week."