It used to happen at Benning at the completion of jump school, at least when I went there. However...several years later, one newly winged jumper showed up in the ER...the wings had been "blood pinned" so hard the tines were buried in his collarbone...bad stuff.
Sometime after that; he wasn't the first to have "issues", the army came out with rules like USMCGrunt described...woe unto the leadership that allowed this as it was considered "hazing" and a criminal act, etc...
Like USMCGrunt said, when I ask friends today they say it doesn't happen.
Steve
USAFA ALO
USAFA '83