‘This Week’ Transcript: Ben Carson and Speaker Paul Ryan

— -- THIS IS A RUSH TRANSCRIPT OF 'THIS WEEK' ON NOVEMBER 1, 2015.

ANNOUNCER: Starting right now on ABC's THIS WEEK, breaking news -- a passenger jet crashes. More than 200 dead. ISIS now claiming responsibility.

Could the terror group actually bring down a plane?

The latest on the midair mystery.

Plus, Republican revolt -- tonight, campaigns meeting after the backlash over that debate.

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GOV. CHRIS CHRISTIE (R-NJ), PRESIDENTIAL CANDIDATE: Even in New Jersey, what you're doing is called rude.

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ANNOUNCER: The man leading the charge for more changes our exclusive guest this morning. We're one-on-one with Ben Carson.

And on the brink, Jeb Bush facing his toughest moment yet.

Can he make a comeback or is he down for the count?

From ABC News, THIS WEEK WITH MARTHA RADDATZ begins now.

MARTHA RADDATZ, ABC HOST: Good morning.

I'm Martha Raddatz.

So much to get to on the 2016 race.

But we start off with that breaking news.

Investigators right now trying to determine what brought down this Russian passenger jet packed with tourists.

All 224 people on board, including 17 children, were killed. The flight taking off from an Egyptian resort, Sharm-el-Sheikh. It was headed to St. Petersburg, Russia. And now, an ISIS affiliate is claiming its responsible.

But should that claim be taken seriously?

We'll talk to our experts momentarily.

First, ABC's Alex Marquardt with the very latest on the investigation -- good morning, Alex.

ALEX MARQUARDT, ABC NEWS CORRESPONDENT: Good morning, Martha.

Egypt's aviation authority tells us this morning that there was no indication before the plane took off or while it was in the air that anything was wrong. Russian and Egyptian investigators are right now combing through the crash site in the Northern Sinai Peninsula, where the field of debris stretches around five miles.

The black boxes have been located and sent for analysis, which should give some clarity on what happened during those 23 minutes that the plane was in the air. The co-pilot's ex-wife told Russian TV that he regularly complained about the state of the 18-year-old Airbus 321, including the morning of the flight.

The ISIS affiliate here in the Sinai quickly claimed responsibility for bringing the plane down. Last year, they claimed to have shot down an Egyptian helicopter. And in July, the group fired a missile from the coastline hitting an Egyptian patrol boat.

But intelligence officials say they don't have the capability to bring down an airliner at 31,000 feet.

Still, that does not exclude the possibility of some sort of explosion on that plane -- Martha.

RADDATZ: Thanks, Alex.

Let's get more on this from our aviation expert, former Marine Corps fighter pilot Steve Ganyard, who was also a mishap (ph) investigator and retired General Carter Ham, former commander of U.S. Africa Command and also a former commander in Mosul, Iraq.

And, Steve, I want to start with you.

And tell you what you see as the possibilities here.

COL. STEPHEN GANYARD, ABC NEWS AVIATION CONSULTANT: I think, Martha, there are -- there are many possibilities. And the tantalizing possibility is that we see apparently a wide debris field, which suggests this in-flight breakup.

Only about 10 percent of all aviation mishaps occur at altitude, at cruise altitude. And so a perfectly good airplane on a clear day should not just fall out of the sky.