incarceration, shep? >> shepard: catherine herridge live in d.c. craft, thank you. the government agency that investigates plane crashes is looking into an incident in which the first lady's michelle obama's jet had to abort a landing. last night.which we learned the first lady was flying back from new york on monday. on approach to andrews air force base her plane came within three miles of a cargo jet in front of it regulators require at least five miles of separation to avoid turbulence in the larger plane's wake. the pilots made a series of turns to try to fall farther behind the cargo jet. air traffic controllers feared there wouldn't be enough time for the cargo plane to clear the runway. they ordered the first lady's jet to circle the airport instead. it landed safely. the first lady is fine. the national transportation safety board announces it has opened an investigation into what went wrong. doug mckelway live with us even as the investigation begins here, doug, the feds are already making changes because of this. >> took them only two days to do