They're a group of ex-military body language experts and/or interrogators who have started these utube videos. The following link is just one example of one of their analyses of body language. Others, such as the Berkshire UFO story by Thom Reed are found easily by following the link to the one on Trump. Worth the hour or so for anyone interested in the topic of interrogatio work.
https://www.youtube.com/watch?v=3_vPlOhViZ0
Edit: Got the wrong link. https://www.youtube.com/watch?v=PXePe2XHBJE&t=1374s
https://www.youtube.com/watch?v=3_vPlOhViZ0
Edit: Got the wrong link. https://www.youtube.com/watch?v=PXePe2XHBJE&t=1374s