former heroin addict. people think that a person suffering from alcohol iism or addiction, they have the image that comes up in their mind, and i like to the break that image. because if i met you on the street, you wouldn t think that two years ago i was an i.v. heroin user. reporter: yes, casey is a new face, and now tasked with taking the message of 23 million americans currently in rekcover straight to the candidates. jeb bush, bernie sanders, chris christie. good to see you. reporter: anyone who could possibly stop this epidemic. i d appreciate it if they would use the same language and not those addicts, those people. because those people are your moms, your dads, sons, daughters, and your neighbor and the chief of your police. they are everybody.