In the "People Being Stupid" category we find this couple casually strolling across NS's Congaree River Bridge yesterday in Columbia, SC. This bridge is 40' above the river and is perhaps two football fields long. There appear to be few emergency places to stand. Later I saw a guy with two girls doing the same, but this time NS 191 was nearing. In my loudest voice I yelled, "YO! ON THE BRIDGE! A TRAIN IS COMING!" The two girls started to hot-foot it to the other side, but the guy yelled back, "WHAT?" I repeated my warning and he replied the same. Finally, I heard one of the girls yell back to him that, "A train is coming!". Even with that, the guy proceeded with no urgency. They made it off. 191 was on the bridge in less than ten minutes.