Marissa Fleeger’s “The Cold War” can be seen as part of the annual Butler County High School Exhibit opening with a reception at 7 p.m. Friday at The Art Center, 344 S. Main St. Winners will be announced at 8 p.m. More than 400 entries have been submitted by high school students in the Butler, Karns City, Knoch, Mars and Seneca Valley school districts. The exhibit continues through April 13. Regular hours are noon to 6 p.m. Wednesdays, Thursdays and Saturdays and noon to 9 p.m. Fridays.