...in which a police officer stops a random motorist somewhere in Los Angeles. “Checkpoint” was written by KPCC’s Steve Julian, based on a question posed by Ken Levine. Actors, in order of appearance: Steve Julian, Steve Martin, Hettie Lynne Hurtes, and Jace Kent, and Doug Geary. Harmonica performed by Jace Kent. The first audio item is the one that was broadcast on Off-Ramp. The second is the longer, original version ... the director's cut, if you will. (See the comments section inside.)