Abstract: A system and method for detecting metal contraband such as weapons related material in shipping containers where a container is scanned with at least one penetrating beam, preferably a tomographic x-ray beam, and at least one image is formed. The image can be analyzed by a pattern recognizer to find voids representing metal. The voids can be further classified with respect to their 2 or 3-dimensional geometric shapes. Container ID and contents or bill of lading information can be combined along with other parameters such as total container weight to allow a processor to generate a detection probability. The processor can use artificial intelligence methods to classify suspicious containers for manual inspection.

Abstract: A handheld personal unit that can estimate a user's position in 3-dimensional space by determining a horizontal position and an altitude. GPS or assisted GPS can be used to determine the horizontal position, while barometric pressure assisted altimetry can be used to determine altitude accurately enough to localize the user to a particular floor of a particular building, and many times to a particular room. An artificial intelligence system can access one or more databases to provide data to the user that is related to the user's position in 3-dimensional space. This data can come from a database either stored in the handheld device or stored at a separate remote location. If a remote location is used to provide data and current barometric pressure (and possibly GPS assist), this station can access other remote stations, as needed, to supply the information. The handheld unit and/or the remote station can optionally access the internet to seek information related to the user's location in 3-dimensional space.

Abstract: A location caller ID feature where a cellular telephone placing a called is located by a telephone service and a message relating to that location is transmitted to a called telephone. The called telephone can display the location of the calling phone in human readable terms.

Abstract: A lighter-than-air ship using hydrogen or other gas as a lift gas with at least one hydrogen fuel cell aboard. The fuel cell can draw hydrogen fuel from the lift gas reservoir to produce electricity both for the ship's use and optionally for propulsion. The waste product of the fuel cell is water which can be used for the needs of a crew on the ship. The hydrogen lift gas chamber, which can be compartmentalized for lift control, can be surrounded by a safety jacket filled with an inert gas and contain optional hydrogen and/or oxygen sensors.