This could happen anywhere. In this case, the train was stationary with its doors open. It was at a terminal and hadn’t started its route yet; the trains sit li

This could happen anywhere. In this case, the train was stationary with its doors open. It was at a terminal and hadn’t started its route yet; the trains sit like that for a while before departing. Also this terminal station is above-ground and partially open-air, and is located a block from the beach. It’s not like the “trapped deep underground” situation most people seem to be envisioning here. A crazy person could do the exact same thing in a park or basically any random bench. Not subway specific at all.