A tracking apparatus comprising: a data acquisition and display device, an active optical beacon detection device configured to capture orientation and position information about a wearer of the data acquisition and display device by receiving unique optical signals from at least two active beacons within a field of view of the active beacon detection device, wherein each active beacon has a known, fixed location and a unique signature; a see-through display having a defined field of view; and a tracking passive beacon location tracking system configured to track the location of one or more non-stationary items with a passive beacon proximately located on each of said one or more non-stationary items as said tracking system receives energy reflected from an energy source by said passive beacons, and a computer in communication with the active optical beacon detection device and the passive beacon location tracking system, and configured: to determine from the orientation and position information of the wearer of the data acquisition and display device and the defined field of view of the see-through display which, if any, of the one or more non-stationary items each having a passive beacon located proximately thereon are in the field of view of the see-through display and to cause display of information and instructions about the one or more non-stationary items each having a passive beacon located proximately thereon in the field of view of the see-through display, said information and instructions appearing proximately superimposed on at least one of the one or more non-stationary items. a data acquisition and display device, an active optical beacon detection device configured to capture orientation and position information about a wearer of the data acquisition and display device by receiving unique optical signals from at least two active beacons within a field of view of the active beacon detection device, wherein each active beacon has a known, fixed location and a unique signature; a see-through display having a defined field of view; and a tracking passive beacon location tracking system configured to track the location of one or more non-stationary items with a passive beacon proximately located on each of said one or more non-stationary items as said tracking system receives energy reflected from an energy source by said passive beacons, and a computer in communication with the active optical beacon detection device and the passive beacon location tracking system, and configured: to determine from the orientation and position information of the wearer of the data acquisition and display device and the defined field of view of the see-through display which, if any, of the one or more non-stationary items each having a passive beacon located proximately thereon are in the field of view of the see-through display and to cause display of information and instructions about the one or more non-stationary items each having a passive beacon located proximately thereon in the field of view of the see-through display, said information and instructions appearing proximately superimposed on at least one of the one or more non-stationary items. to determine from the orientation and position information of the wearer of the data acquisition and display device and the defined field of view of the see-through display which, if any, of the one or more non-stationary items each having a passive beacon located proximately thereon are in the field of view of the see-through display and to cause display of information and instructions about the one or more non-stationary items each having a passive beacon located proximately thereon in the field of view of the see-through display, said information and instructions appearing proximately superimposed on at least one of the one or more non-stationary items.