In the original Blade Runner, a blade runner named Holden administers the Voigt-Kampff test, which is designed to distinguish replicants from humans based on their emotional response to questions. The test subject, Leon Kowalski, shoots Holden on the second question.
How did he escape the Tyrell Corporation after the shooting?
It is a heavily fortified building. They probably have armed guards who would have shot at Leon without a moment's hesitation.
Is there anything from any source that provides more information on this scene?