Monster trucks to shake, rattle, roll at Expo Center
![Monster trucks to shake, rattle, roll at Expo Center](http://bloximages.chicago2.vip.townnews.com/democratherald.com/content/tncms/assets/v3/editorial/b/ed/bed7a4cc-aece-5037-ac0a-76309a94e42d/588932e0e01dd.image.jpg?resize=300%2C225)
The Calapooia arena at the Linn County Fair & Expo Center will be filled Friday and Saturday with the sounds of fire-belching 1,600- to 1,800-horsepower monster trucks during the Monster Truck Thunder Winter Nationals.