1 01:03:23,933 --> 01:03:26,000 Air LUCI is something that actually helps 2 01:03:26,000 --> 01:03:29,633 not just a handful but all 3 01:03:29,633 --> 01:03:32,633 Earth-observing satellites that can use 4 01:03:32,633 --> 01:03:34,966 the Moon as a calibration reference. 5 01:03:35,966 --> 01:03:39,900 And this actually greatly can enhance the 6 01:03:39,900 --> 01:03:41,800 capacity for actually making accurate 7 01:03:41,800 --> 01:03:42,733 measurements of the Earth. 8 01:03:48,099 --> 01:03:50,400 Well, for one thing, it does give us the 9 01:03:50,400 --> 01:03:52,066 opportunity to make those 10 01:03:52,066 --> 01:03:54,066 improvements to our ability 11 01:03:54,199 --> 01:03:55,300 to observe the Earth. 12 01:03:56,766 --> 01:03:59,666 It's also something that hasn't been done 13 01:03:59,666 --> 01:04:02,066 before at this level of accuracy. 14 01:04:02,333 --> 01:04:04,400 So this is the most accurate measurements 15 01:04:04,400 --> 01:04:06,733 that have ever been made of moonlight. 16 01:04:07,766 --> 01:04:13,466 And moreover, up until our ability to do 17 01:04:13,466 --> 01:04:17,300 this, we really have not 18 01:04:17,300 --> 01:04:20,099 been able to predict accurately 19 01:04:20,233 --> 01:04:21,733 the amount of light coming off the moon 20 01:04:21,733 --> 01:04:24,233 at any given time within several percent. 21 01:04:26,233 --> 01:04:28,933 Our measurements are down less than a 1% 22 01:04:29,199 --> 01:04:30,733 accuracy, probably down 23 01:04:30,733 --> 01:04:32,233 to maybe as far as a half a 24 01:04:32,233 --> 01:04:33,066 percent accuracy. 25 01:04:38,166 --> 01:04:42,199 So essentially, Air Lucy allows us to use 26 01:04:42,199 --> 01:04:44,400 the Moon as a benchmark, 27 01:04:45,333 --> 01:04:47,500 which allows sound lights to make sure 28 01:04:47,500 --> 01:04:48,966 their measurements are accurate. 29 01:04:49,400 --> 01:04:51,199 They can turn and look at the Moon and 30 01:04:51,199 --> 01:04:54,000 make sure that what they read from that, 31 01:04:54,000 --> 01:04:57,066 which is well known, will then reflect in 32 01:04:57,066 --> 01:04:58,300 terms of the accuracy of 33 01:04:58,300 --> 01:04:59,766 what they measure from Earth. 34 01:05:00,766 --> 01:05:01,900 Basically, measure the amount of light 35 01:05:01,900 --> 01:05:03,333 that's coming at different wavelengths, 36 01:05:03,966 --> 01:05:06,099 which is pack full of information about 37 01:05:06,099 --> 01:05:07,133 the surface of our Earth. 38 01:05:12,099 --> 01:05:15,833 So, Air Lucy will help facilitate making 39 01:05:15,833 --> 01:05:16,866 more accurate 40 01:05:16,866 --> 01:05:18,099 measurements using the moon. 41 01:05:18,833 --> 01:05:22,733 The moon is a pretty much perpetual 42 01:05:22,733 --> 01:05:24,133 reference that doesn't 43 01:05:24,133 --> 01:05:25,766 change past, present or future. 44 01:05:25,966 --> 01:05:27,733 Any measurements that are made by 45 01:05:27,733 --> 01:05:30,433 satellites in the past or 46 01:05:30,433 --> 01:05:31,800 ones made in the future can 47 01:05:31,800 --> 01:05:33,433 be inter-consistent over time. 48 01:05:33,633 --> 01:05:35,766 That means if they're consistent over 49 01:05:35,766 --> 01:05:37,400 time, we can do long-term 50 01:05:37,400 --> 01:05:38,433 measurements of the Earth 51 01:05:39,033 --> 01:05:40,566 that are consistent and 52 01:05:40,566 --> 01:05:41,966 don't have spurious trends. 53 01:05:42,466 --> 01:05:44,733 So those measurements actually now become 54 01:05:44,733 --> 01:05:47,199 a very good 55 01:05:47,199 --> 01:05:50,466 representation of changes in climate 56 01:05:50,933 --> 01:05:52,133 and our Earth system. 57 01:05:56,866 --> 01:06:00,099 The Euro 2 is an excellent aircraft for 58 01:06:00,099 --> 01:06:01,900 this particular exercise, in particular 59 01:06:01,900 --> 01:06:03,000 because it can fly 60 01:06:03,000 --> 01:06:04,933 above 95% of the atmosphere. 61 01:06:05,466 --> 01:06:09,166 That gives us basically a view of the 62 01:06:09,166 --> 01:06:12,433 Moon that is very similar to what 63 01:06:12,433 --> 01:06:13,766 satellites see from orbit. 64 01:06:14,366 --> 01:06:16,666 And we don't have to worry about as much 65 01:06:16,666 --> 01:06:17,900 the effects of the 66 01:06:17,900 --> 01:06:20,466 atmosphere and our measurements. 67 01:06:22,233 --> 01:06:24,266 Previous measurements that have been made 68 01:06:24,266 --> 01:06:26,966 of the Moon to date have been done from 69 01:06:26,966 --> 01:06:29,066 the surface of the Earth, 70 01:06:29,733 --> 01:06:31,166 more recently from mountaintops. 71 01:06:32,866 --> 01:06:33,766 But you still have a lot 72 01:06:33,766 --> 01:06:35,166 of atmosphere to go through. 73 01:06:35,800 --> 01:06:37,866 Air Lucy on the Euro 2 gives us an 74 01:06:37,866 --> 01:06:39,633 opportunity to be near space. 75 01:06:45,066 --> 01:06:47,633 Aerolucie is kind of non-intuitive in the 76 01:06:47,633 --> 01:06:51,099 sense that it actually helps build our 77 01:06:51,099 --> 01:06:54,833 capacity to measure how the earth is 78 01:06:54,833 --> 01:06:57,233 changing and how those processes are 79 01:06:57,233 --> 01:06:59,266 actually going on a global scale. 80 01:07:00,300 --> 01:07:03,900 So if we better understand how climate is 81 01:07:03,900 --> 01:07:05,566 changing, if we better understand how 82 01:07:05,566 --> 01:07:07,833 systems interact with each other in terms 83 01:07:07,833 --> 01:07:15,433 of weather, ocean currents, ecologies and 84 01:07:15,433 --> 01:07:18,633 any type of process on the surface of the 85 01:07:18,633 --> 01:07:21,233 earth, these lead to things that affect 86 01:07:21,233 --> 01:07:23,266 humans on a daily basis. 87 01:07:23,333 --> 01:07:25,599 We are affected by weather. We want more 88 01:07:25,599 --> 01:07:28,533 accurate predictions of weather and how 89 01:07:28,533 --> 01:07:30,433 weather may be changing with climate. We 90 01:07:30,433 --> 01:07:32,099 want to know how this might be affecting 91 01:07:32,099 --> 01:07:34,333 agriculture, forest 92 01:07:34,333 --> 01:07:37,800 ecology, ocean ecology. 93 01:07:38,633 --> 01:07:42,133 And if we can make better accurate and 94 01:07:42,133 --> 01:07:45,166 more stable measurements from space, then 95 01:07:45,166 --> 01:07:47,699 Aerolucie is actually contributing to a 96 01:07:47,699 --> 01:07:49,233 lot, indirectly, to 97 01:07:49,233 --> 01:07:50,300 people's everyday lives. 98 01:07:55,900 --> 01:07:58,966 So interestingly enough what's really 99 01:07:58,966 --> 01:08:01,133 beneficial about Erlucie is we're kind of 100 01:08:01,266 --> 01:08:04,333 pulling together existing technologies 101 01:08:04,333 --> 01:08:09,099 such as the ER2 and you know NIST 102 01:08:09,099 --> 01:08:12,666 spectrometers and all those equipment 103 01:08:12,666 --> 01:08:18,166 that is very very well understood and 104 01:08:18,166 --> 01:08:21,866 and well known and bringing it to bear 105 01:08:21,866 --> 01:08:23,733 and this sense we're doing something 106 01:08:23,833 --> 01:08:27,333 new and innovative because we haven't 107 01:08:27,333 --> 01:08:29,133 made this accurate a measurement of the 108 01:08:29,133 --> 01:08:32,433 moon before. I would mention that you 109 01:08:32,433 --> 01:08:35,399 know we're using the best you know 110 01:08:35,399 --> 01:08:37,733 spectrometers from instrument systems 111 01:08:37,733 --> 01:08:40,233 these have been vetted by the National 112 01:08:40,333 --> 01:08:41,766 Institute of Standards and Technology. 113 01:08:42,466 --> 01:08:46,533 We're using National Institute of 114 01:08:47,000 --> 01:08:51,133 Standards and Technology sources so we're 115 01:08:51,133 --> 01:08:52,133 basically making everything 116 01:08:52,266 --> 01:08:54,933 internationally traceable in terms of 117 01:08:54,933 --> 01:08:57,100 making very accurate 118 01:08:57,100 --> 01:09:01,100 measurements but the beauty about what 119 01:09:01,100 --> 01:09:03,133 we're doing is we're taking the best of 120 01:09:03,133 --> 01:09:04,933 our existing technology and bringing it 121 01:09:04,933 --> 01:09:07,233 to bear to make this special measurement. 122 01:09:17,199 --> 01:09:19,966 Oh, I mean, the applications are great. 123 01:09:19,966 --> 01:09:24,966 It helps us learn more about the climate. 124 01:09:24,966 --> 01:09:27,399 It gets used to calibrate satellites 125 01:09:27,399 --> 01:09:28,533 that are looking at climate, 126 01:09:28,533 --> 01:09:29,366 and it's really fun to 127 01:09:29,366 --> 01:09:30,300 come out here to NASA, 128 01:09:30,833 --> 01:09:32,033 fly on this beautiful plane. 129 01:09:33,333 --> 01:09:35,000 So it's been a fun project that way too. 130 01:09:38,899 --> 01:09:41,199 Air Lucy's a telescope 131 01:09:41,199 --> 01:09:43,500 attached to a spectrograph. 132 01:09:43,500 --> 01:09:45,133 So the telescope collects the light, 133 01:09:45,133 --> 01:09:46,000 and then the spectrograph 134 01:09:46,000 --> 01:09:47,300 splits it into different colors 135 01:09:47,300 --> 01:09:48,500 or wavelengths of light. 136 01:09:49,166 --> 01:09:52,133 And then we can calibrate that instrument 137 01:09:52,133 --> 01:09:52,966 so that we know the 138 01:09:52,966 --> 01:09:54,633 amount of light very precisely. 139 01:09:55,433 --> 01:09:56,933 And the idea is then to 140 01:09:56,933 --> 01:09:58,633 fly that in an airplane, 141 01:09:58,633 --> 01:09:59,633 have it point at the moon, 142 01:09:59,633 --> 01:10:00,533 and measure the light 143 01:10:00,533 --> 01:10:02,000 from the moon very precisely. 144 01:10:05,899 --> 01:10:10,566 So the data we collect primarily impacts 145 01:10:10,566 --> 01:10:13,733 the ability for the satellites that are 146 01:10:13,733 --> 01:10:15,899 looking at the Earth to make high-quality 147 01:10:15,899 --> 01:10:17,366 measurements that are used from 148 01:10:17,366 --> 01:10:19,266 everything from weather to 149 01:10:19,266 --> 01:10:20,633 climate change measurements. 150 01:10:22,100 --> 01:10:24,300 And really being able to improve those, 151 01:10:24,300 --> 01:10:26,666 you know, billion-dollar instruments with 152 01:10:26,666 --> 01:10:30,199 a relatively inexpensive measurement so 153 01:10:30,199 --> 01:10:31,766 that they can make climate quality 154 01:10:31,766 --> 01:10:33,733 measurements is really exciting. 155 01:10:37,899 --> 01:10:40,600 Yeah, so it's these measurements are used 156 01:10:40,600 --> 01:10:42,533 to help calibrate the instruments that 157 01:10:42,533 --> 01:10:43,133 are making the 158 01:10:43,133 --> 01:10:45,100 measurements of the earth and climate. 159 01:10:45,833 --> 01:10:47,533 So those instruments spend most of their 160 01:10:47,533 --> 01:10:49,633 time looking at the light reflected off 161 01:10:49,633 --> 01:10:52,399 the earth, but to calibrate them we want 162 01:10:52,399 --> 01:10:53,766 them to turn and look at the moon. 163 01:10:54,133 --> 01:10:57,100 So if we can measure the moon precisely, 164 01:10:57,100 --> 01:10:59,600 then they can get a good calibration off 165 01:10:59,600 --> 01:11:01,300 the moon and go back to looking at the 166 01:11:01,300 --> 01:11:02,633 earth and make great measurements. 167 01:11:06,766 --> 01:11:10,533 Oh boy, it's, so usually we do this kind 168 01:11:10,533 --> 01:11:11,466 of work in a very 169 01:11:11,466 --> 01:11:13,566 controlled laboratory environment. 170 01:11:14,033 --> 01:11:16,000 And to come in here to an aircraft hangar 171 01:11:16,000 --> 01:11:18,399 and make a high quality 172 01:11:18,399 --> 01:11:19,766 calibration measurement, 173 01:11:20,000 --> 01:11:21,966 you know, you can see the lights coming 174 01:11:21,966 --> 01:11:24,833 in, the temperature is not controlled. 175 01:11:25,699 --> 01:11:28,666 So that's a real challenge for us. 176 01:11:28,666 --> 01:11:30,166 And then of course the instrument itself 177 01:11:30,166 --> 01:11:32,233 is going to fly up at 70,000 feet. 178 01:11:32,233 --> 01:11:33,966 It's minus 40 or 60 179 01:11:33,966 --> 01:11:36,000 degrees Celsius up there. 180 01:11:36,233 --> 01:11:38,699 So designing the instrument so it can 181 01:11:38,699 --> 01:11:40,866 operate in that environment has also been 182 01:11:40,866 --> 01:11:41,966 a real challenge for us. 183 01:11:46,133 --> 01:11:48,966 The idea is, so this, our telescope 184 01:11:48,966 --> 01:11:51,633 usually looks at the moon, so we make a 185 01:11:51,633 --> 01:11:52,333 light source that 186 01:11:52,333 --> 01:11:53,533 kind of mimics the moon, 187 01:11:54,066 --> 01:11:56,033 and then we brought some instrumentation 188 01:11:56,033 --> 01:11:58,066 that can measure the light coming from 189 01:11:58,066 --> 01:11:59,699 that source very precisely, 190 01:12:00,466 --> 01:12:01,633 and then the telescope's 191 01:12:01,633 --> 01:12:02,733 going to look at that source. 192 01:12:03,166 --> 01:12:04,500 And that's kind of how we 193 01:12:04,500 --> 01:12:06,766 say, "transfer the calibration." 194 01:12:06,766 --> 01:12:07,733 So we have our 195 01:12:07,733 --> 01:12:09,466 well-calibrated instrumentation. 196 01:12:09,800 --> 01:12:10,833 It looks at the source. 197 01:12:11,133 --> 01:12:13,266 Our telescope looks at the source, and we 198 01:12:13,266 --> 01:12:13,833 can take our 199 01:12:13,833 --> 01:12:15,666 well-calibrated instrumentation 200 01:12:16,100 --> 01:12:18,533 and kind of transfer that level of 201 01:12:18,533 --> 01:12:21,633 accuracy to the telescope instrument. 202 01:12:25,233 --> 01:12:28,366 So the ER-2 is a high-altitude aircraft. 203 01:12:28,366 --> 01:12:30,800 It'll fly up above 65,000 feet. 204 01:12:31,333 --> 01:12:32,166 And one of the challenges 205 01:12:32,166 --> 01:12:33,433 of making these measurements, 206 01:12:34,100 --> 01:12:34,899 like we, you know, 207 01:12:34,899 --> 01:12:35,933 everyone can see the moon, 208 01:12:35,933 --> 01:12:36,600 why not measure it 209 01:12:36,600 --> 01:12:37,533 from down here on Earth? 210 01:12:38,000 --> 01:12:40,133 And the reason is that the atmosphere 211 01:12:40,266 --> 01:12:41,166 scatters some of the 212 01:12:41,166 --> 01:12:42,266 light coming from the moon 213 01:12:42,333 --> 01:12:44,333 before it gets down here to the Earth. 214 01:12:44,933 --> 01:12:46,533 And figuring out how 215 01:12:46,533 --> 01:12:47,566 much light you've lost 216 01:12:47,566 --> 01:12:49,199 on that path is hard. 217 01:12:49,199 --> 01:12:50,899 So that kind of degrades our ability 218 01:12:51,066 --> 01:12:52,466 to measure from down here. 219 01:12:52,966 --> 01:12:54,100 Putting it on this plane, 220 01:12:54,100 --> 01:12:55,300 we're flying above 95% 221 01:12:55,699 --> 01:12:56,766 of the Earth's atmosphere. 222 01:12:57,733 --> 01:13:00,199 So it's much less scattering. 223 01:13:00,199 --> 01:13:00,666 That little bit 224 01:13:00,666 --> 01:13:04,133 that's left is the accuracy 225 01:13:04,300 --> 01:13:07,100 which we can estimate that is good enough 226 01:13:07,233 --> 01:13:08,800 to make our measurements. 227 01:13:10,166 --> 01:13:11,899 So yeah, getting above the atmosphere 228 01:13:11,899 --> 01:13:14,066 is a real important thing for us. 229 01:13:14,066 --> 01:13:15,233 And the satellites are of course 230 01:13:15,733 --> 01:13:17,000 above all of the atmosphere. 231 01:13:17,000 --> 01:13:19,966 So we want to know the amount of light 232 01:13:20,066 --> 01:13:22,366 that's up at the top of the atmosphere, 233 01:13:22,399 --> 01:13:23,699 not what we're getting down here. 234 01:13:28,199 --> 01:13:31,199 So the instrument itself needs to, 235 01:13:32,899 --> 01:13:35,266 like we can't communicate directly with 236 01:13:35,266 --> 01:13:36,300 it during the flight. 237 01:13:36,300 --> 01:13:37,366 It's operated by the 238 01:13:37,366 --> 01:13:38,800 pilot and he's just got 239 01:13:39,733 --> 01:13:42,966 a few on-off switches that he can push 240 01:13:43,133 --> 01:13:44,366 to operate the instrument. 241 01:13:44,600 --> 01:13:46,100 He's busy, you know, 242 01:13:46,100 --> 01:13:47,366 mostly busy flying the plane. 243 01:13:47,366 --> 01:13:48,966 He can't do a whole lot. 244 01:13:48,966 --> 01:13:51,233 So he had to program the instrument 245 01:13:51,366 --> 01:13:53,133 so that the pilot just 246 01:13:53,133 --> 01:13:54,833 right before takeoff, 247 01:13:54,833 --> 01:13:56,000 he pushes one switch to 248 01:13:56,000 --> 01:13:56,800 let the instrument know 249 01:13:56,866 --> 01:13:57,600 we're taking off. 250 01:13:57,966 --> 01:13:59,300 When he gets to altitude, 251 01:13:59,300 --> 01:14:00,300 he pushes another switch 252 01:14:00,300 --> 01:14:01,699 that deploys the telescope. 253 01:14:02,833 --> 01:14:04,766 Then it automatically finds the moon 254 01:14:05,266 --> 01:14:06,399 and stays tracked on the 255 01:14:06,399 --> 01:14:07,766 moon while we collect the data. 256 01:14:08,366 --> 01:14:10,166 Then after about 20 257 01:14:10,166 --> 01:14:11,833 minutes, we've got enough data. 258 01:14:11,833 --> 01:14:13,533 He pushes another switch to 259 01:14:13,533 --> 01:14:15,500 tell it, you know, to shut down. 260 01:14:15,899 --> 01:14:16,766 So it's all operated 261 01:14:16,766 --> 01:14:17,866 on just a few switches 262 01:14:17,866 --> 01:14:19,166 and a lot of good 263 01:14:19,166 --> 01:14:21,533 programming from our computer guy. 264 01:14:25,133 --> 01:14:27,600 So the interesting thing about the Moon 265 01:14:27,600 --> 01:14:30,566 is its reflectance is very constant. 266 01:14:30,933 --> 01:14:32,699 So you look up, you know, any night in 267 01:14:32,699 --> 01:14:34,000 the sky, the amount of 268 01:14:34,000 --> 01:14:35,466 light is changing all the time. 269 01:14:35,899 --> 01:14:38,000 But its reflective properties, it's just 270 01:14:38,000 --> 01:14:40,100 reflecting sunlight off its 271 01:14:40,100 --> 01:14:41,566 surface and we're seeing that. 272 01:14:41,866 --> 01:14:43,666 That reflectance is very constant. 273 01:14:43,899 --> 01:14:46,466 So if we can make a few really good 274 01:14:46,466 --> 01:14:50,866 measurements and then make a 275 01:14:50,866 --> 01:14:53,600 model using the reflectance, 276 01:14:53,933 --> 01:14:57,500 then you can use that model to predict at 277 01:14:57,500 --> 01:14:59,866 any time where you are knowing where you 278 01:14:59,866 --> 01:15:01,600 are and the Moon is and the Sun is, 279 01:15:02,199 --> 01:15:03,366 how much light you would see. 280 01:15:07,466 --> 01:15:09,866 So, it's really more 281 01:15:09,866 --> 01:15:11,166 on the calibration side. 282 01:15:12,000 --> 01:15:16,133 We've used, and it's some stuff we've 283 01:15:16,133 --> 01:15:17,066 been doing at NIST over 284 01:15:17,066 --> 01:15:18,533 the last, say, 20 years, 285 01:15:18,533 --> 01:15:22,300 using tunable lasers to calibrate the 286 01:15:22,300 --> 01:15:24,600 spectrograph and developing techniques 287 01:15:24,600 --> 01:15:26,899 to get the spectrograph calibrated well 288 01:15:26,899 --> 01:15:28,933 that have really been key 289 01:15:28,933 --> 01:15:30,933 to making a high-quality measurement. 290 01:15:34,866 --> 01:15:40,833 Yeah, so right now the way satellites try 291 01:15:40,833 --> 01:15:45,666 to maintain their calibration is to bring 292 01:15:45,666 --> 01:15:47,566 up a solar reflector of their own. 293 01:15:48,233 --> 01:15:51,600 So they bring up kind of a white plaque 294 01:15:51,600 --> 01:15:54,566 that the satellite can put in front and 295 01:15:54,566 --> 01:15:57,000 bounce some sunlight off 296 01:15:57,000 --> 01:15:58,266 of to do the calibration. 297 01:15:59,033 --> 01:16:01,000 That takes up space, it takes up mass, 298 01:16:01,233 --> 01:16:04,233 it's not the most 299 01:16:04,233 --> 01:16:05,633 expensive part of the satellite. 300 01:16:06,166 --> 01:16:09,966 But particularly as people are going 301 01:16:09,966 --> 01:16:12,066 towards smaller satellites and CubeSats 302 01:16:12,066 --> 01:16:13,133 and stuff like that, 303 01:16:13,133 --> 01:16:15,433 having something like that on board is 304 01:16:15,433 --> 01:16:17,233 way too much for them. 305 01:16:17,800 --> 01:16:19,333 So if they could just turn and look at 306 01:16:19,333 --> 01:16:21,066 the moon instead of having to carry up 307 01:16:21,066 --> 01:16:22,399 some equipment of their own 308 01:16:22,399 --> 01:16:23,800 to maintain their calibration, 309 01:16:24,433 --> 01:16:26,233 that would be a big advance for those. 310 01:16:26,233 --> 01:16:28,066 Then you could have smaller, more 311 01:16:28,066 --> 01:16:31,066 cost-effective satellites in the future. 312 01:16:35,033 --> 01:16:36,466 The challenges are... 313 01:16:38,933 --> 01:16:42,699 So another thing that usually doesn't 314 01:16:42,699 --> 01:16:44,899 happen back in the lab is no one says, 315 01:16:45,633 --> 01:16:48,033 "Okay, at 102, you need to start your 316 01:16:48,033 --> 01:16:49,699 calibration and be done in an hour." 317 01:16:50,566 --> 01:16:53,633 But here, the plane's just been fueled, 318 01:16:54,066 --> 01:16:55,000 we've turned on the 319 01:16:55,000 --> 01:16:56,266 instrument, it's warming up. 320 01:16:56,733 --> 01:16:58,833 In about 15 minutes, we need to start 321 01:16:58,833 --> 01:17:00,300 calibrating, and it needs 322 01:17:00,300 --> 01:17:01,633 to be finished an hour later, 323 01:17:01,800 --> 01:17:03,433 and then they tow the plane out. 324 01:17:04,833 --> 01:17:07,033 Something goes wrong, then 325 01:17:07,033 --> 01:17:08,366 the whole schedule goes off. 326 01:17:08,566 --> 01:17:11,300 So doing this all on schedule is another 327 01:17:11,300 --> 01:17:13,433 challenge for us, and 328 01:17:13,433 --> 01:17:14,766 makes things really exciting. 329 01:17:19,233 --> 01:17:21,666 We're just hoping for some good weather 330 01:17:21,666 --> 01:17:24,300 and some good luck and really looking 331 01:17:24,300 --> 01:17:25,533 forward to being up in the air.