Now that makes my day :)
Part 4 is coming up in a couple days, hopefully. It will show among other things that Kerry was still hanging around these same groups in his early Senate days. Here's a preview of the part which mentions the PCPJ:
Kerry had first joined forces with the Nuclear Freeze Movement while running for Lieutenant Governor in 1982. At that time he spoke at a June 12 New York Freeze rally which had been organized by Leslie Cagan of Mobilization for Survival (MFS), an IPS-organized group led by a coalition of Vietnam-era antiwar leaders which included former VVAW ally Sidney Peck, founder of the Communist front group the People’s Coalition for Peace and Justice (PCPJ).
Yep, Peck also did a cameo at the Winter Soldier Investigation. Small world...