1. A system for enhanced display of obstacles in a combined vision display for a vehicle, the system comprising: a display unit; an enhanced vision system having a camera that generates a first signal representative of an enhanced vision image; a source of a selection that indicates the obstacles to be overlaid in front of the enhanced vision image based on at least one of a size of the obstacle and a type of the obstacle; a data storage device containing obstacle data representative of the selected obstacles and terrain data relating to terrain proximate the vehicle; a synthetic vision system configured to retrieve the selected obstacle data and the terrain data from the data storage device and generate second signals representative of a synthetic vision image of a topographical environment around the vehicle, the synthetic vision image including the selected obstacles and terrain; a processor in operable communication with the display unit and coupled to receive the first and second signals and configured, in response thereto, to: overlay the selected obstacles of the synthetic vision image over the enhanced vision image; command the display unit such that the combined vision display displays the synthetic vision image, including the selected obstacles and the terrain, in a synthetic vision image window associated with the combined vision display; and command the display unit such that the combined vision display displays the selected obstacles of the synthetic vision image overlaid over the enhanced vision image in an enhanced vision image window of the combined vision display such that the selected obstacles are displayed in both the enhanced vision image window and the synthetic vision window.