Maggie was standing next to the air compressor that drives the tile guy's nail gun when it automatically activated, maintaining the air pressure inside the tank.

It's extremely loud. And not a very pleasant sound. She got really scared and ran away.

Later, she was coming in from a visit to the backyard and it happened again. This confirmed for Maggie that it wants to eat her.

Now, the air compressor is upstairs with us while the trim is being put back in our bathroom. This is Maggie's reaction: