Reasonable speculation. No one should put anything past Trump. But a calm, rational response from Biden should not be discounted.

“Fine, Donald. Please show us your evidence of the presence of a hostile, non-earthly presence. There is none. As the coward you are, it is not surprising you, in your paranoia, would presume the need for violence against what appears to be a highly technologically competent unknown visitor. Should we attack such an intelligence, without cause, even you should see the certain consequences, but then, it appears you do not. We know your position tonight is a childish effort to play tough guy in a last minute, desperate attempt to gain political advantage.”