Roland made no response. He was sitting in a gazebo with a cigarette between his knuckles. Indeed, he was off-duty. As someone who'd been trained to question people who behaved like this man, Roland should have asked him if he was hiding something, but he decided that the man was of no danger to him or anyone else.
Whatever was in that guitar case was likely not a weapon, and if it was, Roland would draw his own before the guy could bat an eye. There wouldn't be, though. Roland was no psychic, he didn't even possess the imagination to be one, but he did have gut feelings when things were amiss, and the only thing amiss here was apparently the stranger's hearing; Roland didn't feel the need to tell him again that it was all right to come into the gazebo.