MAY 22 2014 ATLANTA Rhett Barnwell, director of music at Embry Hills United Methodist Church, plays the organ during the service.cMercer University hosted a public prayer service for 300 kidnapped Nigerian girls at Day Hall Thursday, May 22, 2014. The service was organized by Mercer doctoral student and Nigerian native, Eniabitobi Kuyinu, and featured prayers from several university faculty members and area clergy. The service comes a day after President Obama deployed a drone and 80 troops to Chad to search for the missing girls. KENT D. JOHNSON/KDJOHNSON@AJC.COM