A 2-pound drone crashed into a building during Seattle’s Pride parade on Sunday and fell into the crowd, striking the unidentified 25-year-old woman in the head, Seattle police said Monday. Her boyfriend caught her as she fell, and an off-duty firefighter treated the woman until police arrived. Det. Patrick Michaud, a spokesman for the Seattle police, told NBC News the collision left the woman with "not a gentle concussion." Police said they're seeking the drone's pilot, described as an unshaven white man in his 20s with "a noticeable tattoo of a woman somewhere on his body." Authorities around the world are struggling with how to keep people safe with unmanned aircraft buzzing around overhead.