TCH never undertook the Seals, nor ranger no commando course. The first chap to become a Seal was an Indian WO who was involved in the storming of SQ117. He is now an accountant who settled in Perth. I have no idea why he was wearing the red beret.
He was my OC in NIU/Brani Base (1983)....... the only one wearing a red beret when everyone was wearing blue and the story was he is a US trained SEAL so he is allowed to wear that beret in base.