IMHO, best scene in the film is when they dive the bomber UNDER the Golden Gate Bridge...also, a marvelous score..
At the 1944 Academy Awards, held on March 15th, 1945, 'THIRTY SECONDS OVER TOKYO' won an Oscar for 'Achievement in Special Effects'. The movie was also nominated for 'Achievement in Cinematography'.
Regrettably the film's fine, moving musical score was not even nominated.
One crew really flew under the Golden Gate. Of course, by then the crews had been training for weeks for nap of the earth flying and had flown that way clear across America.