the face of either of the pilot or the co pilot. they would focus on the instrument and on the manipulations of that are made. reporter: former ntsb chairman jim hall says cameras would be a deterrent to bad behavior or careless piloting and would be a key investigative tool. what could cameras detect? you can see the instruments, you can see what they re seeing on their instrument panels on their screens. you can see what they re doing with their hands. reporter: cameras on the instruments wouldn t necessarily give investigators much help in the germanwings crash probe. they already know how that plane went down technically. but former commercial pilot, lynn spencer, says cameras trained on pilots faces could carved certain moments that cockpit voice and flight data recorders might miss. was the pilot choking, is the pilot having a seizure. reporter: the technology is already on the market but one manufacturer told us no airlines have bought their cameras. cameras are alr
that much but lynn spencer said that planes could catch certain moments that the voice and data recorders may miss. was the pilot shocking or having a seizure. it s already on the margrket but one said that no one has bought the cameras. they re use today monitor key missions like the launch to the space station. there used to be a train operator or taxi or bus driver caught look at this one and then caught crashing. cockpit video could be live streamed in real time and alto the expensive and installing cameras could be prohibited. cockpit cameras could have provided key evidence in some of the most great disasters in aviation. if we had cameras in the cockpit in 9/11, we can could
international space station. they re used to watch some train operators, taxi drivers, and bus drivers, including this one, caught looking at his phone, then crashing. cockpit video could even be live streamed back to controllers on the ground in real-time. although the expense of installing and streaming thousands of live cameras could be prohibitive. spencer says cockpit cameras could have provided key evidence in some of the most infamous disasters in aviation including 9/11. if we had had cameras in the cockpits 9/11 we would have been able to see how the hijackers took over the cockpit, how they killed the pilots how they tried to manipulate the controls. reporter: the top pilots union in america is staunchly against the idea. in a statement to cnn, it says cockpit video, quote, is subject to misinterpretation and may, in fact lead investigators away from accurate conclusions. pilot union officials also say they re worried about a video leaking. they say voice data recorder cl
panels on their screens. you can see what they are doing with their hands. reporter: cameras on the instruments wouldn t necessarily give investigators much help in the germanwings crash probe. they already know how that plane went down technically. but former commercial pilot lynn spencer says cameras trained on pilots faces could catch certain moments that cockpit voice and flight data recorders might miss. was the pilot choking. is the pilot having a seizure. reporter: the technology s already on the market. but one manufacturer told us no airlines have bought their cameras. cameras are already used to monitor key missions like today s launch to the international space station. they are used to watch some train operators, taxi drivers, and bus drivers, including this one, caught looking at his phone, then crashing. cockpit video could even be live streamed back to controllers on the ground in realtime although the expense of installing and streaming thousands of live cameras
when president obama pointed me, he asked as appointed me, he asked that i served as a custodian for this chapter of american history. this is my fourth visit to the memorial site since becoming secretary of the interior. i have had the honor of working with the family and friends of the heroes of flight 93. i also have had the honor of working with the landowners and the community of shanksville, whose lives, like the rest of the nation, were irrevocably changed on that day nine years ago. the location for this year s service is especially significant as we return to the western overlook where the journey began nine years ago. this is where the pennsylvania state police line to the ridge on horseback lined the ridge on horseback as the families were first brought to view the wreckage. this is where the other agencies carried out their duties. many of those who served in the investigation and recovery efforts are with us in the audience today. for the first responders, ar