Impulse blinked as her target vanished into the floor. That's not fair, the bad guy wasn't supposed to get away like that! It was time for plan C then, still circling the room she scanned it for something to clock him with.
Couch? Too heavy. Magazines? Why are so many magazines with all those people in swimsuits? Stuuuupid! Signs? Too hard to swing? Oh! A bowling trophy! That could work!
Yoinking the trophy Impulse sped up, just past the sonic level, figuring the gunfire had blown the stealth aspect so getting attention couldn't be bad. There was a tremendous boom, windows on the floor were blown out, car alarms outside went off, any hope of this being quiet was thrown out the window.
She then zipped down the stairs, slowing down to subsonic again to deal with that masked guy.