The Fugitive (1963)

While working as a steward at a remote desert resort, Kimble is unaware that the area is a top-secret government test site for chemical weapons. Kimble tries to leave, but gets mistaken for a spy by Major Beck, the head of the project. When several staff members, including the staff physician, suffer from a resulting chemical explosion, Kimble is pressed into service to care for the wounded, unaware that Beck still plans to turn him into the army general leading the project.