InTheDrink
Contributor
The Guardian confirms that the kids were drugged:
Seems rather prudent to me; I for one really wouldn't want to handle a panicked child underwater in zero vis. Load them up well into happy happy joy land, but not so much that they're reduced to unconscious luggage
Ha, so my suggestion of a little bit of valium might have been correct

Given panic a primary risk something to take the edge off it probably was prudent.
In any event, great news 11 out. Now for the remainder. Here's hoping the rest goes smoothly.
This rescue will go down in history for sure.