Navy and Marine Corps Reserve Center under construction in Chavez Ravine, 1940

Water and Power explains, 

Designed as the largest enclosed structure without walls in the world by noted California architects Robert Clements and Associates, this Art Deco building, constructed between 1938 and 1941 by the WPA, is the largest and second-oldest Navy Reserve Center in the United Stages. It has served as the induction, separation, and training center for more than 100,000 sailors since World War II well as the filming site for countless motion pictures and television shows.

1940, View showing the Navy and Marine Corps Reserve Center under construction in Chavez Ravine.

1941, Final construction stage of what was once the largest Navy Reserve Center in the U.S.

1955, A cannon sits in front of the entrance to the United States Naval and Marine Corps Reserve Training Center in Chavez Ravine.  Location is 1700 Stadium Way, Los Angeles, CA.

1980, A firefighter checks the auditorium of the United States Naval and Marine Corps Reserve Center in Chavez Ravine.

On February 27, 1980, a fire heavily damaged the center.  Los Angeles firefighter Frank Hotchkin was killed when a portion of the roof collapsed.  The building is now operated by the Los Angeles City Fire Department at the Frank Hotchkin Memorial Training Facility.