>> this has been an on going theme of this investigation. investigators are able to find debris in a satellite image. and then by the time that's processed and turned over to the investigators on the ground and in the airtime has lapsed. now it takes time to get back out to that area. there's drift, there's current. we're going to continue to have this problem. you can scan so much area in a satellite compared to being in a plane where you have to physically be there. we've had a very poor success ratio of being able to go back out into the area and identify those -- those promising leads that we've found from satellite imagery. >> it is the biggest search effort to date. is that enough? can they reasonably expect to get to these pieces before they move on? >> i gets guess, if you ask the