NEW : The airport was shut down to incoming and departing traffic for several hours after the Asiana crash , which occurred around 11:30 a.m. Saturday . All four runways at San Francisco 's airport are now operational , airport says . Comment: A teen who died earlier was hit by fire truck , police say . Her body was believed to be covered in foam sprayed by firefighters , spokesman says .
NEW : All four runways at San Francisco 's airport are now operational , airport says . Comment: A teen who died earlier was hit by fire truck , police say . Her body was believed to be covered in foam sprayed by firefighters , spokesman says .