Katniss glanced at her bow out of the corner of her eye, before looking back at the strange man. Why wouldn't she be armed after that invasion of muttations? Maybe he arrived after that. Seeing as this was her first encounter with him, so she did not know but either way, this arena was dangerous and she wasn't about to wander around helpless.
"I was going hunting," she said after a moment. "Not much food around here."