You are a probationary police officer and this is the first week that you have patrolled on your own without a partner or Field Training Officer; you have been with the department for about 3 months. Your town has a population of about 50,000 people. You were born here, graduated from high school here, and attended the local college majoring in criminal justice. You know the town well and have many friends in the community. This is a nice place to live and work, and you hope that you can make a career here, settle down, start a family, maybe even be Chief of Police someday.

One night while on patrol, you spot a car driving at an excessive speed down a street in a residential neighborhood. You begin a pursuit and notice that the car weaves across the center line several times. You finally pull the car over thinking that this is a drunk driver who is obviously a danger to the community. When you approach the car, you see that the driver is your old friend from high school, Jerry. Jerry seems intoxicated, but he recognizes you and gives you a friendly greeting. After a few minutes of small talk, during which you smell a strong alcohol odor on Jerry, you tell him that you want him to perform a field sobriety test. He looks at you with surprise and says, "You're kidding, right?"

You reply, "No, Jerry, I'm not kidding. I think you're drunk, and you shouldn't be driving. I may have to arrest you.

"Aw man," says Jerry, "you wouldn't do that to your old bud, would you?"

Jerry fails the field sobriety test badly. "Yes, I'm afraid so," you respond. "Get in the back seat."

"Wait a minute," says Jerry, "maybe I had a little too much, but I'm on my way home—you know where I live—it's just a couple of blocks. Man I don't need this. My insurance is already sky high; if I get a DWI, it will go out of sight! You gotta cut me some slack!"

"Sorry Jerry, but this is serious. You could hurt someone, or kill someone, even yourself. Let's go."

"Come on," Jerry pleads, "I know it's serious, but I need a break. Besides, I didn't turn you in that night I got busted smoking grass in high school."

Suddenly, you flash back. It was the summer after 10^th grade and you and a bunch of your friends were at the park. Someone brought out some marijuana and started passing it around. It was only minutes until a sheriff's deputy drove up and everyone scattered. Jerry was the only one who got caught; he ended up on juvenile probation, but never told anyone else who was there that night. You feel both stupid and afraid. Jerry's right—he did cover for you. You were a kid then, and it was really no big deal, but this is different—you're a cop now, and this is your job. But, what if Jerry tells the Chief about the marijuana incident? What about your credibility as a police officer if this becomes public knowledge? It's not so much about the marijuana now as it is about your honesty. When you filled out your job application, you answered "no" to the question about any prior drug use.

What do you do?