A multi-layer viewing system (110, 200) comprising: a stationary imager configured to acquire images with a field of view that comprises a target object; a beam projector controllable by operation of a remote and/or local user control to project one or more physical layer markings onto a target region of the target object; a headset separate from the stationary imager and from the beam projector, the headset comprising an augmented reality display being sufficiently transparent to enable the local user who is wearing the headset to directly view the target object through the augmented reality display and configured to display an annotation that is superimposed on the directly viewed target object so as to be visible to the local user, the headset further comprising: a scene imager configured to acquire scene images of a region in front of the augmented reality display, or a headset beam projector configured to project a headset beam in front of the augmented reality display; and a processor, configured to: receive, from the remote user, an indication of a selected location relative to the target region for display of the annotation; determine an orientation of the augmented reality display based on: locations of said one or more physical layer markings in the scene images, or the location, in an image acquired by the stationary imager, of a mark that is formed by the headset beam relative to said one or more physical layer markings; calculate a display location for displaying the annotation on the augmented reality display such that the annotation is perceivable by the local user as displayed at the selected position relative to the target region; and display the annotation on the augmented reality display at the calculated display location. a stationary imager configured to acquire images with a field of view that comprises a target object; a beam projector controllable by operation of a remote and/or local user control to project one or more physical layer markings onto a target region of the target object; a headset separate from the stationary imager and from the beam projector, the headset comprising an augmented reality display being sufficiently transparent to enable the local user who is wearing the headset to directly view the target object through the augmented reality display and configured to display an annotation that is superimposed on the directly viewed target object so as to be visible to the local user, the headset further comprising: a scene imager configured to acquire scene images of a region in front of the augmented reality display, or a headset beam projector configured to project a headset beam in front of the augmented reality display; and a scene imager configured to acquire scene images of a region in front of the augmented reality display, or a headset beam projector configured to project a headset beam in front of the augmented reality display; and a processor, configured to: receive, from the remote user, an indication of a selected location relative to the target region for display of the annotation; determine an orientation of the augmented reality display based on: locations of said one or more physical layer markings in the scene images, or the location, in an image acquired by the stationary imager, of a mark that is formed by the headset beam relative to said one or more physical layer markings; calculate a display location for displaying the annotation on the augmented reality display such that the annotation is perceivable by the local user as displayed at the selected position relative to the target region; and display the annotation on the augmented reality display at the calculated display location. receive, from the remote user, an indication of a selected location relative to the target region for display of the annotation; determine an orientation of the augmented reality display based on: locations of said one or more physical layer markings in the scene images, or the location, in an image acquired by the stationary imager, of a mark that is formed by the headset beam relative to said one or more physical layer markings; calculate a display location for displaying the annotation on the augmented reality display such that the annotation is perceivable by the local user as displayed at the selected position relative to the target region; and display the annotation on the augmented reality display at the calculated display location.