In his own words, John made an announcement for the raffle on his tumblr page:

“This November, I’ll spend a day working on a volunteer project for U.S. military veterans. It’ll be myself, a few friends and some veterans working side by side. It turns out I can invite three more volunteers, and each of them can bring a guest. We’ll work hard on the project and share a meal afterward, and when we go our separate ways, we’ll know we’ve accomplished something great together. Click here for more info.“

Get your tickets for the chance to volunteer with John on this special project here.