This is spoopy. Guy crashes gate onto a nuclear site, they chase and corner him, he gets out of car with unknown cylindrical container, refuses to put it down and they shoot him dead.
Crazy guy or a desperate attempt to blow up a facility that houses radioactive material.
https://www.independent.co.uk/news/world/americas/nevada-nuclear-test-site-man-shot-dead-national-security-car-chase-police-a8754426.html