could be the next critical device in the underwater search for malaysia airlines flight 370. our own brian todd is just outside washington, d.c. with a closer look at orion. that's capable of doing more than the bluefin-21. brian, tell us what you can about the orion. >> reporter: well, wolf, this is the orion right now. it's towed on cables like this. it can scan the ocean floor about three-quarters of a mile in each direction and go much deeper than the bluefin can go. many analysts believe if the bluefin can't find wreckage of the missing plane, this could be the next vehicle in the water. the bluefin-21 has scoured the search area, pushed the limits of its depth capability, and so far found nothing, but the ocean floor is deeper in some places than the bluefin can go and this