Big Brothers Big Sisters of East Tennessee will raise awareness and funds for its new Mentor 2.0 Program, a technology-enriched, one-to-one mentoring program that focuses on college readiness and success for high school students, that will launch this fall at South-Doyle High School. The event will take place on the rooftops of Market Square with food, drinks, music and decade-themed fun from the 1970s to the 1990s. The participating rooftops include: Scruffy City Hall, Knoxville UnCorked and Cafe 4. Check-in starts at 6:30 p.m. Tickets must be purchased in advance.