This technique PT's are using is really just Acupuncture. These skills are transmitted in curriculum at Acupuncture schools, where students study for years, completing thousands of classroom hours and many hundreds of clinical hours before being able to obtain a license to safely practice. To allow PTs to dry needle without proper training is a disservice to the public's safety. Yes, your muscles in your shoulder may release and feel better, or you may get a punctured lung. Unsafe dry needling procedures administered by undertrained PT's that result in accidents are going to undermine hardwork of the acupuncuture community to bring this powerful and gentle medicine into the mainstream. Keep the public safe and require PT's to get an acupuncture license if they want to practice Acupuncture. I wouldn't pretend to have the knowledge or training to safely and effectively employ PT modalities with patients.