[RightOnline]

I was commissioned and my IQ was never measured. To the best of my knowledge, there has never been a "minimum IQ" prerequisite for commissioning.

[Gunrunner2]

You are absolutely correct--no IQ measurements.
(There are the AFOQT tests, however, but those are more SAT-type than IQ. Now, the pilot/nav portion of the AFOQT does involve some problem solving/spatial relationship intuitive questions, but it is not an IQ test.)