Four Shadow, a male a cappella pops quartet from Minneapolis will perform in concert on Sunday afternoon in Gallup. The performance is sponsored by the Gallup Community Concert Association. [Courtesy Photo]

Highway hazards ...: ABOVE: Gallup firefighter check on Albuquerque based truck driver Richard Mathews after he jack-knifed the truck he was driving Thursday along I-40 near the Munoz Overpass in Gallup. Mathews reported that another vehicle had been driving erratically and cut in front of him before suddenly braking hard, forcing him to swerve onto the shoulder to avoid colliding with the other vehicle. [Photo by Jeff Jones/Independent] BELOW: Norma Carpio holds her face which had a large bump on her check Thursday afternoon at the scene of a weather related accident in the westbound I-40 lanes between exit 20 and 16. Carpio was a passenger in the sport-utility-vehicle that lost control while traveling in the eastbound I-40 lanes and further spun across the median into the westbound oncoming traffic. The driver of the vehicle, Juan Ortega stated that while passing a tractor-trailer in the heavy rain, he applied the brakes because he could not see. Subsequently the vehicle began to hydroplane and spin out of control. [Photo by Daniel Zollinger/Independent]