ms. o'neal. thank you for coming. i think it's very telling in our efforts to open up the topic today how uber was the only company that accepted our invitation to come and present. even though you provided us with contacts, none of your colleagues wanted to take the chance and engage in dialogue. thank you very much for your efforts and your openness to this. now i have a couple questions. you talked about the drivers that do not follow your accessibility protocols or they are caught with not following procedures that there is an enforcement process. can you give us more details about that. how many times does an uber driver have to not accept a guide dog to be terminated? what is your procedure? >> typically when there is a report of any kind that we take seriously whether it's driving under the influence which we have a zero tolerance policy for itd and we have a zero tolerance for discrimination. when there is a reported nature of that, the driver's ability to use the app is immediately put on hold pending investi