Rivas had tried to help him stand.

He became frightened when she suggested an ambulance.

He said he couldn’t afford another bill and that his child was waiting.

Then a volunteer arrived with a cart of food, and for a few distracted seconds nobody watched the doorway.

When she turned back, the man was gone.

“I looked around the parking lot,” she said.

“There was no car.

I assumed he had family nearby.”