The Danger of a Red Van

This happened around 2003 when I was 12 or 13 years old. My mom had chosen to homeschool me that year and for some reason that also tasked me with walking my younger sister about 9 or 10 at the time to school. The walk was just shy of a mile each way. We lived in a very safe, smallish suburb so I generally felt fine walking around by myself with my younger siblings. On this morning, about two blocks into the walk, I noticed a large, older red van parked on a road next to us idling with an older man, maybe in his 50s or 60s and the driver seat staring at us. He looked like a creepy Mr. Clean,