Feel about being used as a campaign prop?
Really? Hmmm.
What he does do is to hand them the microphone and ask them to say a few words about their charities and what they do for veterans.
Both of the ones I've seen were for therapeutic dogs. The charity people brought some dogs to the event and spoke about how they helped veterans with physical injuries and with PTSD.
It was very interesting, and a side of veteran's care that I wasn't familiar with.
In addition to a sizable donation, the groups got national recognition for what seems to be a very worthy cause, as well as a chance to educate the public.