[esbranson]

We have a statutory office within the US Department of Defense meant to track UFOs (AARO).[1] Why would such things be sending electromagnetic signals from outer space?

Literally thousands of witnesses. It's very odd to say "aliens may exist, but those nuclear weapons officers are crazy, aliens would definitely be sending signals from elsewhere, they would not be and are not here."

[1] 50 USC § 3373 https://www.law.cornell.edu/uscode/text/50/3373