So once it's done doing its own little checks, [bell] so it's going to be kind of uh like how I explained in the field. So you're going to do a nice hard steady blow into the into the machine here. Um you'll hear a tone and you want to keep that tone going. That's how you know you're giving it enough air. It's going to go as long as you're putting enough air into it. Um if you're unable to provide good samples, then I'm going to have to call it a refusal. So, cuz some people get in here and be like, I am blowing, but they're clearly like sucking in or whatever. >> I'm so cold. >> Did you have a coat in the car? >> No, I had one at my house, but I didn't bring it. >> Okay, are you ready? So, nice deep breath in. >> Sorry. Sorry. Sorry. I took that before I did. >> So, keep that going. Oh. >> Oh. >> So, you got to take a deep breath in and then blow out. >> Okay. I'm sorry. >> Okay. So, deep breath in. Okay. Keep going. Keep going. Keep going. Keep going. Keep going. Keep going. Keep going. You got to get to the little mark and you're still a little bit away from it. Keep going.