Have any Marines, Soldiers or Airmen participated in Navy Chief Petty Officer Initiation?

I was a joint command, JRCC. As a Non Commission Officer you should be involved/stationed in a joint command during your career. Just as officers have their mess so should us. On the enterprise we always had air force pilots. E-7 and above are a special breed of leadership.

as a selectee, no, as a participant for the events leading up to appointment, yes. The Selectees at a base near me had to support a September 11th, Memorial as part of their process. They asked for and received my services as a Bagpiper for the event. They were also a bit surprised to learn I am a Retiree from a small Fire Department north of Manhattan, and that I would do the event gratis in memory of one of my former co-workers who perished with 342 other NYC Firefighters that day. I've done so twice, once in modified Army Uniform and once in modified Fire Department Uniform for Selectees from the Unit.

Yes I went thru Chief Initiation while stationed in Stuttgart Germany in 1991. It was unforgettable..

Yes I am an Honorary Chief as a GySgt back in 1991 while I was in Stuttgart Germany