NEW : All Friday at San Francisco airport are now operational , airport says . A girl , who 'd been in critical condition , died four runways 3 p.m. at a San Francisco 's hospital . A teen who died earlier was hit by fire truck , police say . `` And that will be part of our investigations , like any other case , by our hit-and-run and major accidents investigations teams . '' Her body was believed to be covered in foam sprayed by firefighters , spokesman says .
NEW : All Friday at San Francisco airport are now operational , airport says . A girl , who 'd been in critical condition , died four runways 3 p.m. at a San Francisco 's hospital . 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 .