 When Ariana Alvarado was 12 years old, she got a phone call she wasn't prepared for. At the time, I didn't even know what fentanyl really was. Her childhood friend overdosed. Now 17 and a senior at Lincoln High School, she's educating her peers about the dangers of fentanyl. Like you never know what has fentanyl in it. You never know when somebody could need their life saved.