Per Jim’s Search blog, the 3 week search is called off with no clue what happened to the database researcher. Thousands of volunteers helped searching Jim through spy planes, satellite maps, Amazon mTurk, etc. Jim is a Turing Award winner due to his distinguished contribution in database research. He also did a lot of interesting research of indexing the astronomy objects in the vast space. I still remember attending his talk on spatial indexing of the sky in the university and he is an extremely nice person to talk with. I wish him the best of luck. Hope miracle will happen.