'Nightline' Daily Line, Oct. 10: Michelle Obama on the Campaign Trail

5:09 p.m. ET: ABC News' Martha Raddatz tweeted:

Credit: @MarthaRaddatz/Twitter

3:47 p.m. ET: Would you pay almost $300 for this burger?

Credit: Liz Steger/Serendipity3

This is Serendipity 3's "Le Burger Extravagant," a $295 burger that Guinness certified as "the most expensive in the world."

Watch more tonight on "Nightline"

2:01 p.m. ET: Col. Jeannie Flynn Leavitt is not only a decorated fighter pilot; she has broken through gender barriers few thought possible. She was recently named the Air Force's first female wing commander, commanding 5,000 airmen at Seymour Johnson Air Force Base in North Carolina.

Read ABC News' Martha Raddatz's report HERE

Credit: ABC News

11:39 a.m. ET: A Boston-bound man wearing body armor, flame retardant leggings and knee pads under his trench coat arrested at Los Angeles International Airport after a Customs and Border Protection officer found a smoke grenade and several weapons in his checked luggage is facing a federal charge for transporting hazardous material on an airplane.

Read the latest HERE

Credit: ABC News

10:32 a.m. ET: In the finale of "Nightline" anchor Cynthia McFadden's interview with Michelle Obama, we go on the campaign trail with the first lady, who talked about her role in her husband's re-election bid.

"There is nobody that is less satisfied and knows that there's more to do than my husband," she said. "Yeah, there has been a lot accomplished but Barack, of all people, knows that there's still folks hurting and there's still work to be done."

Read more HERE and watch Cynthia's report TONIGHT on "Nightline"

Credit: Hank Disselkamp/ABC News

9:50 a.m. ET: ABC News' senior White House correspondent Jake Tapper reports:

ABC News has learned that Eric Nordstrom, the former Regional Security Officer at the U.S. Embassy in Libya, has told congressional investigators that security at the U.S. diplomatic post in Benghazi, Libya, was "inappropriately low" - and believed that State Department officials stood in the way of his attempts to change that.

Read Jake's full report HERE

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