S.S.
OK, the first thing that came up when I googled it was, Gay. I don't know if it is what your brother is a part of, however. To be exact I quote the website.
The New Warrior Training Adventure is a singular type of life affirming event, honoring the best in what men have to offer the planet. We are only able to recognize the powerful brilliance of men because we are willing to look at, and take full responsibility for, the pain we are also capable of creating ... and suffering. This is the paradox of modern masculinity, and it is a lesson we are dedicated to learning and teaching.
The New Warrior Training Adventure is a modern male initiation and self-examination. We believe that this is crucial to the development of a healthy and mature male self, no matter how old a man is. It is the "hero's journey" of classical literature and myth that has nearly disappeared in modern culture. We ask men to stop living vicariously through movies, television, addictions and distractions and step up into their own adventure - in real time and surrounded by other men.
Yes this is for Gay men, so I would consider talking to your brother about attending. I know of a "Gentleman" that attended it, and it was more than just a "social" event.
Hope this helps!