I think this map had heat vision. Idk how it is done or if the map was rippable.
http://hce.halomaps.org/index.cfm?fid=4792

Videoman to answer your question about heat vision it is possible as evident here, but depending on your level of knowledge, I don't think it is an endeavor that you would want to undertake. It involves not only adding tags, but modifying literally every model tag in the map.

Thanks barrettrouton for the advise. And for PX173. Please look and compare the date when i joined....and when you joined. Notice how i joined on: Feb 2, 2008...and you joined on: Aug 22, 2009. Hmm..that indicates that i am NOT new here. It actually indicates that YOU are new here. So it was pointless to saying: You're probably new here...because from what i can tell, you signed-up almost one year after i did. That's what some people call: A no brainier. Now....i would like to thank all the people who cooperated in this thread (excluding PX173). I am in the process of making a "thermal vision map". Now that i have the tags (thanks to kirby422) i can make some cool Halo CE maps.

Thanks again

Videoman