>> jon karl joins us from the white house. and jon, tonight, another member of congress is apologizing, this time for a naked picture posted online? >> reporter: congressman joe barton acknowledges that it is a picture of him. it's unclear who posted it. and there have been no allegations of wrongdoing, although barton says he is sorry he did not use better judgment during a time when he was separated from his second wife. tom? >> jonathan karl for us tonight. jon, thank you. next, the crash of a navy plane in the seas off of japan. and now the search for survivors. eight people onboard recovered and alive, but three are still missing. that plane was on the way to the "uss ronald reagan," which is part of the 7th fleet, and it's the sixth major accident to strike that very fleet this year. here's abc's senior national correspondent matt gutman. >> reporter: tonight, that massive search in the pacific for those three missing sailors. at 2:45 local time, in the midst of a huge u.s./japanese