ith the transition to the Global Positioning System, Transit has been decommissioned, after having served well for the Fleet. A new system, the Navy Ionospheric Monitoring System, was established using Transit satellites. This article examines the application of the new system to the field of computerized ionospheric tomography. (

the authors present a case of embryonal rhabdomyosarcoma of the middle ear in an adult patient. computerized tomography indicated a malignant tumor and the diagnosis was confirmed by pathological analysis.