[USA Today] DETROIT -- David P. Gilkey, a former Detroit Free Press photographer and video editor who built a career out of finding the human side in dire conflicts, was killed while on assignment for NPR in Afghanistan on Sunday, NPR news reported.Gilkey was traveling with an Afghan army unit when the convoy came under fire and his vehicle was struck, NPR spokeswoman Isabel Lara said in a statement. An Afghan translator, Zabihullah Tamanna, was also killed. Two other NPR journalists traveling with them were unharmed.