You can't be practically tracking every co-ordinate at every second, not yet. On...

enscr on March 8, 2014 | parent | context | favorite | on: Search on after Malaysia Airlines flight vanishes

You can't be practically tracking every co-ordinate at every second, not yet. Once you know what to track, you can do it effectively. For airplanes, it's already late. Maybe, if they are lucky, based on satellite imagery, they can gather traces.