I am a member of TES. The last call I received from them was on May 31. I can't remember which calls were which ,but they called twice on May 31, and I believe this was about a missing person in Pearland, TX.
I'm not sure how they do their notifications, if they only call people within a certain area to search for someone, but I haven't gotten anymore calls about missing people since the 31st.
I lived in Houston at the time that I became a member (moved up north within the last couple weeks), and got all the calls about Mickey, even though Lafayette was 4 hours way. I've never gotten a call about anyone furthe than that, but they might have called other members who were closer to search in Mississippi.
ETA: Once they started the initial search for Mickey, I did not receive anymore calls about her. We got a call initially to be on standby, then at least one other call to meet for the search and to notify the organizer if we would be participating. They do not call every single day of a search, at least not this time. I think they assumed that all of the members and volunteers who were going to participate would show up in Lafayette for the first day and stay there. If they are going back after leaving, I have not heard anything about it, but again they may not be making anymore calls for members and volunteers and may just be sticking to the initial group who showed up and giving out their info in person or through the website.