sentences:  His firm accepted a commission to excavate below the Mark Hopkins Hotel in order to create a bomb-resistant radio transmission center for AM station KSFO and shortwave programs of the Voice of America.This space became the hotel's underground parking garage after the war.Timothy L. Pflueger died suddenly at the age of 54 on November 20, 1946, of a heart attack on Post Street outside of the Olympic Club after taking his usual evening swim.