>To believe these aliens are visiting Earth you need to explain why you can't see them anywhere except ostensibly in deserts above American military facilities

>To believe these aliens are visiting Earth you need to explain why you can't see them anywhere except ostensibly in deserts above American military facilities and installations for testing secret aircraft. FWIW, I think this is a much stronger argument against the existence of aliens than “they don’t fit with our current understanding of physics (which is known to be incomplete anyway)”.