I am plotting a story set in the early 2000s in which a terrorist shoots a high-powered rifle at a space shuttle as it is about to launch.
I have in mind that he would be located in the swamp to the north west of Launch Complex 39B.
What security or natural hazards existed to prevent him from simply walking to his shooting position from Merritt Island National Wildlife Refuge?
What other measures were (and probably still are) in place to prevent this scenario from happening?
Thanks!