Spill (1996)

Secret Service agent Ken Fairchild (Brian Bosworth) winds up venturing into the heart of a national park when a truck containing biological weapons crashes while traveling through the wilderness sanctuary. Investigating in anticipation of a presidential visit to the area, Fairchild receives assistance from the lovely Dr. Larraine Keller (Leah Pinsent), but has to face off against criminals who want to obtain the weapons for their own nefarious purposes.