Exactly. The AFI is only stating reality. The SAF (and his vice) are the only ones with power to authorize human experimentation. I am sure there are protocols that they following before approving human trials.
BTW, folks human experimentation happens all the time. It ain't alway Dr. Mengele stuff, as some would have you assume. It is usually legal, and almost always with the full knowledge and consent of the subjects. In the case of military members, as the above post indicates, they agree to allow themselves to be ordered to receive vaccinations. I strongly doubt that they are the first ones ever to receive it, but are usually among the first as they will be placed in the possible way of the diseases for which the vaccinations are a prophylaxis.
Such cases are not so much experimentation as they are a genuine, but leading edge, attempt to maintain a viable military in hazardous circumstances.
Get over it. If you don't volunteer to serve or you don't volunteer for a specific trial, no one can legally require your participation in human trials. On the off-chance that you do not believe this, I have lots of tinfoil to sell you. Warning: No one has proven that tinfoil is efficacious. If you use it, it will be on an experimental basis.
