CNN State of the Union July 7, 2013 16:16:00
Wouldn't that have been in place? >> well, you know, there are a lot of systems that help support the pilots as they come into airports especially busy ones like this one at san francisco. there's been a discussion about the glide scope being out of service. but there are a number of other tools available to the pilots, some less sophisticated like the lights, precision approach lights that they were talking about. but also some things that are more technologically advances, things on the airplane that can give you gps information. >> so something if the plane were working correctly would have...