Students from local high schools participate in a Pit Crew Challenge during the 2009 Top Wrench competition at McGhee Tyson ANGB. Top Wrench is an event hosted in partnership with local high schools where students compete in auto mechanic troubleshooting contests. The event emphasizes a drug free lifestyle and has been held since 1991 with over $50, 000 in scholarships awarded. (Air National Guard Photo by Tech Sgt Kendra Owenby)