Yes, I noticed her and others too... strangeness... They were waving at the back of his head too... One point about 15 minutes in the people behind him seemed more interested in something around them than the president. That may have been about the time that guy was holding up the photo of the van, I missed that, he was not on my feed. Did see that blonde behind him keep checking her watch (I finally assumed it was a smart watch??)
Obvoiusly, it was Q in disguise. ;)
You can see the guy holding up the picture towards the end of the speech.