A method of receiving a geo-spatial position from a first and second head-worn computer with see-through displays, and receiving orientation information from the first head-worn computer indicating an orientation of the first head-worn computer, presenting content in the first person's display indicative of the second person's location, wherein the content is aligned with a displayed straight virtual target line and positioned within the first person's field of view such that the content is perceived to be in a position associated with the second person's location and maintaining the displayed straight virtual target line and content position until receiving an indication that the second person has moved.