In the following video clip from MD Yarmish, taking at Camp Mesifta in 1940, you can see Rav Yisroel Chaim Kaplan, Rav Shlomo Heiman and Rav Shraga Feivel Mendlowitz.

https://matzav.com/wp-content/uploads/2020/12/VIDEO-2020-12-21-14-41-11.mp4