Right now I've noticed they have alot of free sports events!
Some of the examples of tickets offered:
Click on this link >> Vettix. After clicking on the link, you'll be brought to a screen like this:
1.)Select your current status in the Military
2.)Scroll to the bottom and Select your Branch
3.)Enter your military associated email address (.mil or .gov, etc)
They will send you an email with instructions on how to verify your account. That's it!
I recently received tickets from them to a college football game. They sent me the tickets priority mail. The tickets were free of charge but they do charge a shipping fee which was like $10 for 4 tickets.