First the bad news. I discovered Tank Mechanic Simulator and have been distracted by WW2 tank renovation the last few days. I didn't even know I needed this in my life.
Now for some amazing news. Resident mad scientist Copy-Cat discovered where Swat 3 stores it's view distance in the game executable and now we can change it to whatever we want!
Originally when Swat 3 was released the developers kept the view distance low because of limitations of home computers at the time. They designed maps around this limitation and generally only gave us a straight line view of about 120 feet. Extending the view distance removes portal glitches on certain maps and also gives future map makers more opportunities.
You can read about all this in a forum thread. Great work Copy-Cat!
Image of Copy-Cat at work in his lab