It’s an experiment the Bend Police hope will deliver a message. Volunteer police officers will be at Boondocks in Bend Friday night, offering up free Intoxilyzer, better known as breathalyzer, tests to the patrons. "The point is, is people may have one or two drinks and feel pretty good. But then again, they don't really know how the alcohol, what the percentage is in their body.  So it's going to be a free test, so they can come and take the test and find out exactly the percentage of alcohol is that is in their body and whether they're impaired or not." Bend PD spokesman Steve Esselstyn says this is the first time the Department is trying the test in a bar. He says the point is to help educate people about just how much alcohol it takes for you to actually be over the limit. the test is free and voluntary, and Esselstyn says this will be first of several events they plan to hold over the rest of the summer. They will be at Boondocks from 8 p.m. to 1 a.m. Friday night.