WHAT DOES RSO SYRINGE MEAN?

moojersey reported: Hey I have been looking through some threads And that i see that there are a few of you out there that are range basic safety officers at Elk Neck. I'm thinking about volunteering down there and becoming an RSO. I reside in North East about 5-ten mins from your vary. I am new to shooting and have shot at elk neck about 50 percen