A Portland firefighter sustained serious injuries to the face and head Monday in bizarre incident involving a giant socket. The trouble began at roughly 11 am, when a 1981 Buick Skylark heading west on North Willamette Boulevard crossed the yellow line into oncoming traffic and plowed into the side of a Les Schwab truck. The collision ripped open the truck's tool compartment, catapulting a hail of hardware through the air, including a set of massive steel sockets designed for truck-wheel lugnuts. One socket flew through the open window of Portland Fire Engine No. 26, which just happened to be stopped at an intersection, striking engineer Kelly Ekhoff, 46, in the face. Ekhoff, a 25-year veteran of the Fire Bureau, was transported to Emanuel Hospital with a broken nose, broken tooth and concussion. "They just happened to be in the wrong place at the wrong time," says Fire Bureau spokesman Neil Heesacker. Police are investigating the accident.