KINGSPORT — The largest LEGO robotics competition in Tennessee is coming to the Model City Saturday. STREAMWORKS Powered by Eastman (Chemical Co.) is presenting the second annual Model City FIRST LEGO League “Into Orbit” robotics competition qualifier and FIRST LEGO League Jr. “Mission Moon” Expo. On Dec. 8, grades K-8 students will gather their crews for a space-themed STEM (science, technology, engineering and math) competition at Sevier Middle School, 1200 Wateree St.