Wouldn't doubt that at all. I also would not want to hang out around the Sunken Road at Antietam during the night.
Driving home from Chattanooga once, when we lived in Tennessee, I got the shakes so bad I had to stop on the side of the interstate for 20 minutes.
I've never been to Sharpsburg. My husband and I were going to go once, but we made a wrong turn and ended up in Manassas. The battlefield was closed (it was the year of the Gingrich government shut down - and I wish he'd held the line, too!), so we spent the day at the city museum and the antique shops.