Tea Party swift-boats NE GOP Senate candidate Shane Osborn with ad so nasty, one Omaha TV station isn't airing it

KETV said it wants more documentation for an ad alleging Shane Osborn "created" a "fake memo" on U.S. Navy letterhead defending his decision to land a damaged spy plane in China rather than crashing it into the ocean during his military service. AKSARBENT noticed this evening that WOWT has had no qualms about taking the money and running the ad.
     The 60-Plus Association is a dark-money D.C. slush fund, that, according to Wikipepdia,

...has sought to offer a privatized option for Social Security, end the federal estate tax, and strengthen gun rights. Current issues include opposing certain health care reform proposals, opposing federal energy standards, opposing the structure of the General Motors bailout, supporting the Stop Online Piracy Act, and opposing tax increases... In 2014, documents left behind by an attendee at an exclusive "donor seminar" put on by Charles and David Koch (of Koch Industries) revealed that the billionaire brothers count the 60 Plus Association as a part of their massive political network.

The Washington Post says Nebraska's wild GOP U.S. Senate primary is a make-or-break contest for the Tea Party, which is going all out for Ben Sasse.
     Breitbart.com says Osborn's lawyers may go after TV stations running the "Dishonorable" ad, shown below.

     In a letter sent to television stations airing the ad, obtained by Breitbart News, attorney Patrick Borchers warned networks that the ad in question "contains materially false statements concerning Former Lt. Cmdr. Osborn's service in the Navy and subsequent actions." 
     "Your station has a legal duty 'to protect the public from false, misleading or deceptive advertising,'" he writes, citing a 1961 court case, and adds that "broadcasting stations are not protected from legal liability for airing false and misleading advertisements," suggesting that the Osborn campaign may take legal action against stations that air the ad.