It completes its trip to space with people on board for nasa. Joining me is the Nasa Public Affairs officer. It is great to be back here for this historic milestone moment and nasas commercial crew program. Expected toome is last roughly 19 hours. That includes four departure up with burn to line the landing location, and a final burn. The trip home also includes an eight hour sleep period where both crewmembers can get some rest before arrival gone are the tomorrow after a little more than two months in space. Dragon is targeted to splash down off the coast of pensacola florida pensacola, florida at 11 48 pacific time tomorrow followed either crew getting picked up. The Mission Began on may 30 at kennedypad 39a space center and sort of. After a successful launch, the astronauts enjoyed a 14 hour flight on dragon before they came to the International Space station. Bob and doug have been doing real work aboard the station. Captain completed spacewalks and theyve also taken spectacular photos. We will have a chance to share some of those later in the broadcast. It has already been 63 days since they arrived in space and they are entering the final phase of their mission just a few hours from now and they have been preparing the last two weeks for the return flight. Today on board the space station is the expedition 63 crew led by Chris Cassidy and joined by russian cosmonauts. And of course bob and doug. Teams have also been performing a number of checkouts in preparation for departure today. Over the last several weeks inspections of the heat shields, checkout of the suits, calms systems, and a systems, as well as cargo loading. Why dont we check in with gary at Johnson Space center and he can tell us how the station crew have been preparing and what we can expect from here. And all inside the International Space station Flight Control room. Since arriving at this vacation, bob and doug jumped in as fully fledged members of expedition 63. The last two months they have executed more than two dozen scientific addition scientific studies, including in biology and biotechnology, earth research,sciences, and technology demonstrations. They also have plenty of includinge work, vehicle hardware and transferring cargo in and out of the attached cargo spacecraft. Executed four spacewalks with Chris Cassidy, upgrading one of the large external batteries with doug assisting. Since completing the spacewalks, bob and doug have spent the last two weeks preparing to come home. They have received additional on orbit training to assist on departure and splashdown and have been busy packing cargo for their return. Thats what they are doing right now. There will be approximately 150 kilograms returning on dragon. The majority is more than 200 pounds of science, largely made up of samples in freezers. They are from a range of biological Research Experiments on the station dedicated to improving our understanding of the human body adapting to microgravity, or using space to improve life on earth. Lets go through some of the major upcoming milestones for todays departure. Coming up at around 2 35 p. M. Pacific, we are waiting for bob and doug to board the station rather, board of the dragon for the return flight home. They are doing some closeout duties now, but that is one of the first items on the agenda today. Less than 30 minutes from now, they will close the dragon hatch , around 2 45 p. M. Pacific time. Once in the vehicle, they will don their spacesuits, worn during all dynamics phases of the flight. All of the checks will be will occur before they strap in for undocking. Once the hatch is close, chris will city cassidy create a space between the station known as a vestibule. He then has another hatch to close. After all of the hatches are closed, about 15 minutes later, a ground command be sent to open the valves on the dragon side and begin depressurization, essentially venting air. Psi tove to pause at 5 allow the temperature in the vestibule to stabilize before they continue depressurization. Theyp. M. Central time, conduct go no go here in houston and if all is go, the undocking begins. There will be a few minutes for the umbilical to detach. 12 hooks will detach and then the dragon thrusters will initiate and undocking will be complete. That separation is scheduled for 4 34 p. M. Pacific time. There are four departure burns. Immediately after those two burns, they have the physical separation and the departure burns will take them around the zenith side of the International Space station. Those departure burns taking them, takingf place over the first few hours of their flight, essentially getting that dragon further away from the International Space station. Ableight, the crew will be to get a sleep two in. Orbital chip project trajectory allows them to get in a good circadian rhythm and allows them to perform all of their tasks prior to splashdown. Including, while they are asleep, they will also be performing a phased burn. Right now they are in the orbital plane of the iss but phased burn will align them with the primary landing site. Right now we are looking go for pensacola, just off the coast of pensacola, florida. Series ofperform a checks upon waking up when the phased burn occurs while they sleep. Waking up, they put on their suits and prepare for the deorbit sequence. They will prepare for the cost separation. Claw separation. They will perform a heavy yaw of the vehicle. Dragon back up with the orbital plane inside the forward ok. This will be one of the forward bulkhead. This will be one of the longest burns. They will position the dragon for reentry into earths atmosphere and the reentry sequence will begin. Before they do that, they do have to close the nosecone. After they close the nosecone, they will go through the the parachutes, and then splashdown scheduled for sunday afternoon around 1 48 p. M. Central time, 11 48 a. M. Pacific time. Recovery operations begin after that and they will be back on planet earth. Station commander Chris Cassidy will watch the undocking and departure burn from the c uppola, but most of it falls to bob and doug. The crew on board has the ability to take control of dragon during departure if necessary. On the station side, we are looking good, arrays are locked in place, everything looking healthy. They will remain on u. S. Control until undocking. There are no issues for a departure here. Now back to you and hawthorne. Right now on your screen is a view of Mission Control, thats where the Ground Controllers are operating. We listenwhy dont into the net for a second, i think there is some chatter happening. We are going to start and we have ago. A go. You are go. A believe i just heard a go call on the sb net, but i think we are still in the process of assessing Vehicle Health and making sure bob and doug can , which ise capsule currently underway. With the ingress operations underway, we are about 10 minutes to hatch closer at about two hours before the dragon departs the International Space station at 4 34 p. M. Pacific time. Bob and doug need to get into their spacesuits. Primary function is to protect the crew in case of cabin depressurization. If that were to occur, the suits inflate with either a combination of nitrogen and oxygen or oxygen, depending on the pressure. It gives them a habitable environment long enough to get home safely in an emergency scenario. The external portion of the suit is also flame retardant, so if there was a fire on board the vehicle, the suits would provide some protection in that event. This is are actually really cool. They are very aesthetically designed and designed inhouse at spacex. They are very sleek. The crew has been busy all day as they prepare to leave. Got up this morning, actually evening on the International Space station right now, and they got up and started working out. All of the astronauts on the space station have to work out two hours every day every day every day to keep up the strength so that they can walk when they get back home. They got up, had the opportunity to do that, bob behnken transferred some emergency equipment from dragon into the space station. They keep the emergency equipment in there in case they needed to make a speedy getaway and dragon in case some thing happened on the International Space station. You mention the idea of safe haven. Vehicles,e visiting when they are attached to the space station, they can provide the crew with a place to hole up if there was an emergency on the station, a leak or a fire or depressurization. Some of that emergency equipment is stored in the vehicle for quick access in case they needed to get inside quickly. The crew actually train ready rigorously on those emergency scenarios, getting in quickly under all kinds of disability scenarios and ensuring crewmates are aboard safely in their vehicles as well. We did some training with the crew here in hawthorne earlier this month. Of what isk recap coming up next. Bob and doug going through ingress operations right now. About 2 35 p. M. Pacific time is hatch closure, and that is where we will close the forward hatch on the dragon station dragon spacecraft. Then, the closing of the apex hatch. That is on the space station side. The space station crew will be working on that. Then vestibule depressurization, that is the space between the hatches that accrue flies through when they arrive and leave. That space as close to a vacuum as possible because thats what it will be exposed to ones crew dragon departs, hopefully in a couple of hours. Right now, the planned departure and separation is 4 34ng around for 34 p. M. Pacific time. Thats when we are hoping dragon do some small, docking burns that will separated from the space station. This is a view from inside the space station looking down to the depressurization adapter. I think i saw cassidy in the view and i think those are his other expedition crewmates on board, bob and doug probably inside the capital capsule at this point. Looks like cassidy to the left and the others upside down, what looks like upside down to us, but there is no upside down in space. Hatches are still open so we will wait for the closure. You can see that is probably the apex hatch if you look past where the iss crew are, i believe that is the apex hatch, kind of that white circle, and Chris Cassidy will attach a docking target onto that when we are ready to close the hatch. He might be hopping into dragon to help out with work in the capsule with securing. We mentioned bob and doug have been busy today. They have been busy as well stowing cargo on board the vehicle. Just listening to the net, it looks like they are going through life support activation. I heard a callout that Carbon Dioxide levels are coming down, which means the lifesupport system is actively taking in air from the cabin and revitalizing it so bob and doug can breathe nicely on board. Just some statistics while we are thinking about it. Obviously mentioned that crew dragon has been on the station for 63 days. It feels like yesterday. During that time, bob and doug millionveled over 27 miles around the earth. Incredible. Frequent flyers, i would say. Do you get a frequentflier pass for dragon . [laughter] around. Zipping i think on ground track, they are going over 17,000 kilometers when they are at isss orbital altitude. I think it is 70,500 miles per hour. It is 17,500 miles per hour. Still extremely fast. If you look just above the hatch, you see the iss 20 flag, presenting the 20th anniversary of the International Space station, which we will celebrate later this year. For the past 20 years i like to explain it as if you are under 20 years of age, you have never lived a day without humans in space. The last 20 years, we have had continuous human presence on the International Space station. It is truly international. Our upside down friends we see getting a better look inside, they are from the Russian Space agency. Looks like they are taking out the inner module ventilation, which helps equalize the air between dragon capsule and the rest of the International Space station. While dragon has been attached to the space station, most operations have in a lowpower state where we only have monitoring on the thermal system, propellant system, looking at some parameters in case we were to see anything that would trigger the dragons on board automation to let ground operators know something needs to be addressed. The onboard lifesupport system is only used when we close the periodsand for brief when the vehicle first arrives, and when it is leading like now. That duct, the intermodule ventilation duct, that provides clean, breathable air and circulates the air in the capsules, providing the air from the International Space station. It looks like hatch closure will soon be underway. We are closing the forward hatch. The equipment inside dragon is being moved back into the space station. [no audio] is part of those activities, moving the intermodule ventilation ducts, the lithium hydroxide scrubbers on board dragon have been running. I think we are waiting on confirmation of hatch closure. I think they just called down that they are working on that, putting that into motion. The forward hatch is closed for endeavor. Copy. Houston copies. We just got confirmation that capsule endeavor has closed the forward hatch. We can actually see on our screen that they are closing the apex hatch as well. That crew dragon hatch closure came at 2 36 p. M. Pacific time as the iss was flying over the north atlantic ocean. Hatch closure operations, bob and doug impacted the seal on the interior surface on the forward hatch on dragon. Were talking about the forward hatch and site hatch. The forward hatch is the part attached to sort of the front portion of the International Space station. Imagine the iss flying in a direction around the earth, the forward election is what they are attached to. If you imagine the capsule sitting on the racket, its the top of the rocket underneath the nosecone. Rocketare imagining the as it was on the launchpad, it is a little sideways right now. There is a ceiling surface on the forward hatch that bob and doug did an inspection on to make sure there is no foreign that couldis or fod create a potential leak. Looks like we may be stepping into a sidelight handover, which a satellite handover, which happens frequently. Checking data, the satellite system constantly moving from one to the next. We actually used the tracking and data relay satellites as well on the dragon as well. I believe they are in the geo belt, hopefully that is correct. [laughter] communications, uplink and downlink and commanding, downlink for us to command the vehicle if we need to step in on the ground side. Speaking of which, we have a view of Mission Control in hawthorne. That is where our Mission Controllers are in hawthorne, the folks issuing commands to dragon spacecraft are all sitting in the third row spacecraft. The mission row is commander. Have bobacecraft, we in his comfort garment, which is what he wears under his suit. The capsule is getting all packed up. Another view from the International Space station side of things, looks like anatoly flying out of you and Chris Cassidy between the hatches in that vestibule area. Proceduresng through to soon be closing the apex hatch and prepare for depressurization. We talked about this a little bit. Copy, spacex, thank you. We talked about this a little vestibule, but the the space between the apex hatch and forward hatch on dragon is a small volume that is normally exposed to the vacuum of space when we dont have a visiting vehicle like the dragon spacecraft. We have to step through some depressurization steps once we have confirmed all of the hatches are secured both on the International Space station side and the dragon side. We just heard the call that bob and doug are go for suit donning. The dragon hatches closed and theyve said goodbye to their friends for now until they are on the ground in the future. They will go through suit donning. The comfort garment is the first layer of the suit. It is basically like an athletic garment, it just helps them stay comfortable before they step into the suit. The suit is largely a onepiece design. The helmet is integrated into it, the boots are integrated into it. Unzip somey will interfaces on the suit, climb into it, zip the attachment points up, and there is an umbilical on the leg of the suit, a kind of connection that provides gases and electrical connections to the suit so they can use the integrated microphones and the helmets. It also provides breathable checks, andit leak if we were to have an emergency scenario, it would provide pressurization to the suit. Notable to mention, these are different suits from what you might imagine for the spacewalks these are called intravehicular activity suits, made for being inside the vehicle. What we just saw as Chris Cassidy was between the hatches and that vestibule space, he was fixing the docking target we mentioned earlier. I like to say it is like x marks the spot. It is what the vehicles aim for when they arrive at the iss. One step closer to bringing bob and doug home. We are fortunate, the weather turned out pretty good in the gulf, looking at a pensacola landing site right now. Just before we went on air today, we had the 2. 5 hour prior to undocking weather briefing and it is still looking good for an ontime departure today. Really glad to see the weather cleared up, the storm moved toward the atlantic. Which opens up our opportunities for landing sites in the gulf of mexico. Mentioned earlier, pensacola being the primary site today. As they continue to work on the hatch, lets check in with gary on the iss Mission Control room side of things. Thank you. We are watching the same view you are seeing, Chris Cassidy king on the apass hatch on the iss side. The h