Below is the rush transcript for "This Week" on March 9, 2014 and it may contain errors.
RADDATZ: Good morning. Welcome to "This Week."
Malaysia air mystery. Why did flight 370 vanish? This morning, breaking details on the massive search operation, the investigation into what went wrong, and those new questions about why two people boarded the flight using stolen passports.
Collision course: Putin's standoff with President Obama over Ukraine. What happens next in their war of words?
And stars align, conservatives crash the capital.
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SEN. TED CRUZ, (R) TEXAS: Our country is at a crisis point.
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RADDATZ: We take it all on, including our exclusive with Tea Party hero Ted Cruz.
Plus, the powerhouse roundtable right here this Sunday morning.
ANNOUNCER: From ABC News, This Week with George Stephanopoulos right now.
RADDATZ: Hello, again. Good to have you with us. As we come on the air this morning, the mystery of what caused Malaysia Air 370 to vanish is deepening. The frantic search for the plane continues, but no signs yet of a crash. We have late word that the pilots may have made a last-minute maneuver to turn the plane back. And there is increased scrutiny this morning of as many as four passengers on that plane, including two who boarded using stolen passports.
We have team coverage from around the world including the chairman of the House intelligence committee who's been briefed on the mystery and will join us in just a moment.
But lets get right to David Curley for the very latest -- David.
DAVID CURLEY, ABC NEWS CORRESPONDENT: Martha, this is the end of the second day of daylight searching, and still no sign of this Malaysian airlines 777.
What we really need is these crews to find wreckage, then vessels can listen for the pings of those all-important black boxes. It's those recorders that could solve the mystery of the sudden disappearance of this jetliner.
CURLEY: It's every flier's greatest fear, a plane falling out of the sky without a trace. And this morning the search continues over the waters off Vietnam for any signs of Malaysian Air Flight 370.
The Boeing 777 with 239 passengers and crew on board took off after midnight on Saturday heading for Beijing. It's the red eye.
But it was last heard from at the 50 minute mark, then nothing, no distress call, no mayday signal. This morning, Malaysian officials say there is a possibility that the plane may have tried to turn back to Kuala Lumpur.
JOHN NANCE, ABC NEWS AVIATION ANALYST: We have probably over 60,000 flights every day all over the world, and that may be a conservative figure, and this sort of thing never happens.
CURLEY: ABC's Bob Woodruff is in Beijing where families have been waiting for answers.
BOB WOODRUFF, ABC NEWS CORRESPONDENT: David, I did have the chance to meet a lot of the family members here in this hotel where they are living these day. They told me that they're praying for a miracle, that maybe their loved ones are still alive. Perhaps the plane did not crash, maybe hijacked and taken away by someone to a safe place.
That, of course, really does seem to be desperation.
CURLEY: As the search now movies near the end of its second day, questions remain -- what exactly happened during what should have been the safest part of the flight? Among the possibilities, a structural or mechanical failure.