Here's a short story:

(CNN) -- The surviving pilot of Virgin Galactic SpaceShipTwo told authorities he was unaware the feather system had been unlocked early by his co-pilot. 

The spaceship disintegrated 45,000 feet above the Mojave Desert on October 31, killing co-pilot Michael Tyner Alsbury and injuring co-pilot Peter Siebold, who managed to parachute to the ground. 

Siebold was interviewed last week by the National Transportation Safety Board. He described being "extracted from the vehicle as a result of the break-up sequence and unbuckled from his seat at some point before the parachute deployed automatically," according to a release from the NTSB. 

Earlier this month, the NTSB tweeted that Alsbury "moved the lock/unlock handle into unlock position." 

...the copilot, who was in right seat, moved the lock/unlock handle into unlock position; he did not survive accident. #SpaceShipTwo 

But that mishap alone doesn't explain why the feathering started, since no one moved the feathering handle. 

During feathering, two pieces on the back of the vehicle -- the "feathers" -- lift up perpendicular to the spaceship, making the vehicle look as though it's arching its back as it descends. 

The wreckage has been recovered and will be used for follow-up examinations. 

Test pilot's workplace a cold, harsh environment 

 (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: How many feet above ground did the spaceship disintegrate?
Guess: 45,000 feet

Question: Who survived the accident?
Guess: Peter Siebold

Question: Who was killed?
Guess: Michael Tyner Alsbury

Question: When did this happen?
Guess: October 31

Question: Who moved the lock/unlock handle according to the NTSB?
Guess: Alsbury

Question: What system was unlocked?
Guess: Feather system

Question: What does NTSB stand for?
Guess: National Transportation Safety Board

Question: What happens during feathering?
Guess: Two pieces on the back of the vehicle lift up

Question: Has the wreckage been found?
Guess: Yes

Question: What did Siebold say deployed automatically?
Guess: Parachute

Question: What desert were they over?
Guess: Mojave Desert

Question: Did anyone move the feathering handle?
Guess: No

Question: What does feathering make the spaceship look like when it's coming down?
Guess: As though it's arching its back

Question: What was the name of the spaceship?
Guess: Virgin Galactic SpaceShipTwo

Question: Was Siebold injured?
Guess: Yes

Question: Did he break his leg?
Guess: unknown

Question: What will happen with the wreckage that was found?
Guess: Will be used for follow-up examinations.

Question: When was Siebold interviewed?
Guess: Last week

Question: When did the NTSB tweet about Alsbury?
Guess: Earlier this month

Now answer the following question in the same format.

Question: Who was in right seat?

Alsbury