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good afternoon welcome back to mission

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control here in houston uh joining me is

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our lead uh spacewalk flight director

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for today royce renfrew rice uh

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if you could uh take a moment to

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summarize uh today's spacewalk

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activities uh and the events that led up

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to and uh required an early termination

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to the spacewalk sure so

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what i said to the team before we went

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out the hatch

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and i said this in the

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every eba i've done the one in december

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it was the same speech was that

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the objective that we have today is to

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take the crew outside the hatch and

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bring them back in

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and somewhere in between the depress and

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the repress we're going to do some other

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things but the primary objective is to

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get the crew back inside the hatch safe

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and that's what we're all focused on

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and that's exactly what we did today we

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we went outside we did a couple of tasks

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there the suit started talking to us

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we had a co2 sensor that went fritzy on

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us and then a little bit later in the

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eva

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tim copper started seeing some water on

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his visor those are all indications that

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we have some water carry over in that

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emu i'm not going to try to diagnose the

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problem that i had with the emu today

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was very similar to the one that we that

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we've had before where we had water

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carry over into the helmet

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i made the call

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after we started getting some water on

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the visor to terminate the eva

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we bought uh both crew back inside uh uh

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ran the expedited suit off for uh tim

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copra to get him out of his helmet

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anyway and then uh

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then we

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strolled back to our normal

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egress and post eva procedures for tim

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peake and tim copper after that after we

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got his helmet off we did do some

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collections some sample collection we we

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got some of the water out of the helmet

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the the helmet a high absorbent pad

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that's inside the helmet now we

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collected that we used a syringe to pick

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up some water that was in there took a

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bunch of pictures

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looked at the the lcvg that tim was

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wearing after he came out looked at his

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drink bag looked at a bunch of different

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stuff so we

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coordinating with our friends down in

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the mur our engineering counterparts uh

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try to get as much data gathering off of

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uh this emu as we could so that going

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forward we can go figure out what

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happened to this uh

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what happened on this eva to this emu so

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we can prevent that in the future rice a

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great deal of work since the chris

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cassidy look apartment tonno spacewalk

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in july of 2013 a lot of work has been

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done to refine

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the flight rules regarding situations

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such as we saw today can you talk a

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little bit about the approach now versus

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july of 2013 and how you as a flight

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director uh interpret the flight rules

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and then make the final call that you

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did today sure and and so so everybody's

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completely cognizant of that

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of that case where luca wound up with a

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bunch of waters helmet with mr cassidy

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out there we brought them back inside we

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and we've spent a great deal of time the

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last couple years

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looking at that case in particular

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trying to understand the the what

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happened in the emu to allow that water

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carryover to occur and to posture

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ourselves so that we are in a config

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that if we got into the case again which

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is conceivably i'm not going to try to

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call it today but again it's conceivably

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what we got into today

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i think that demonstrates that the

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training that we've uh that we've gone

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through in the last couple years you're

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talking about the flight rules we're

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talking about

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uh understanding what it means when that

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co2 sensor goes bad that could be water

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carry over into the suit we didn't

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terminate the eva at that time because

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we've seen that in the past but we did

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if you remember as we were going forward

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from that point we did ask

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tim koper to give us hap checks more

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often than we had normally would have uh

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and that's part of the training part of

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the follow-on from what we did there you

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see that co2 sensor go by go bad one of

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the legs of that fault tree says you're

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going to get water in the helmet so you

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start asking the crew

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not only

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are you starting to have any co2

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symptoms because i don't have a sensor

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there but are you starting to feel any

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if you move your head around inside the

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helmet are you starting to feel any

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water in the half and then when we got

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the water on the visor that was that was

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the trigger where i pulled the trigger

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and we terminated the eva

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the

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objectives have been completed of course

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what uh obviously the crew is never in

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any danger right crew is not in any

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danger today uh

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again based on what the lessons learned

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that we had

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we executed per our normal procedures

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for this failure case

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there are multiple feather cases on the

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emu and we spend a great deal of time

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looking at each of those individual

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federal cases what would you do in this

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case

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this thing called a cuff checklist

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uh you'll see the eevee crew members

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thumbing through it occasionally i have

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one on my console there are 30 40 pages

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in there of things that could go wrong

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with the suit one of them in there says

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we have water and helmet

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so we executed per our nominal timeline

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and again the crew was not in any danger

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which is why we were in a terminate case

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instead of an abort case and we did not

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do the expedited repress we did the

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normal repress because following the

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signature as it was going

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we made the decision that we did not

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need to go down a path to do an

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emergency repress the airlock or call an

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abort for the case there's a subtle

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difference in eva terminology between a

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terminate and an abort terminate you can

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take a little bit of time clean up the

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work site

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and in abort case you drop everything

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come back inside i called it terminate

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today we did not do the emergency

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repress we did the normal repress so

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we were we were in control of the case

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but the

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we could not ignore the case as we went

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forward

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and in fact the crew took time out to

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thank the team down here before the

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repress even began another indication uh

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that uh there was time to do this in an

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orderly fashion yeah i thought that was

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good

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uh tim copeland so again the objective

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for today's eva was to go out and

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replace the sequential shunt unit on on

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channel one bravo

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uh and we did and it works just fine and

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that's awesome so we managed to get our

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primary objective done and while tim was

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in the airlock while we were doing that

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nominal repress he took a few minutes to

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thank the teams for all the work that

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had gone into getting him out and

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getting to co do that ssu r r so good

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indication that

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that the crew was not in imminent danger

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if he's giving uh thank you thank you

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speeches at the oscars here

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and the bottom line is uh the engineers

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now go off in a csi mode and do

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detective work

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that's correct and that's why it's

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important uh

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you probably heard some of the calls

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going up between jessica and reid there

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to go get a syringe and and collect the

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water that was in the helmet we

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collected the the pa the hap out of the

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helmet we collected a bunch of pictures

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and then we'll turn all that over the

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engineering community along with the ops

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guys and i'll sit around see if we can

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figure out what happened here again to

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to try to prevent this from happening

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again but i but i do want to emphasize

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that you know that our the plans that we

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had the procedures that we had the the

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products that we have on console was the

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training that we've gone through in the

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last couple of years was exactly on

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on par with what we executed today so i

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was very happy about that team did a

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great job great thanks very much royce

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renfrew lead flight director for today's

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spacewalk appreciate it and

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congratulations on accomplishing uh the