The 23rd Bombardment Squadron was born in 1921 and in April 1924 was consolidated with the World War I 23rd Aero Squadron. It spent the decades of the 1920s and 1930s stationed in Hawaii. There, the squadron flew a number of bomber types, most notably the Keystone bomber series and later the Douglas B-18 Bolo. It was during the squadron's stay in Hawaii that the event signified by the squadron emblem took place. On 27 December 1935, the Mauna Loa volcano on the island of Hawaii erupted, threatening the city of Hilo. Six Keystones of the 23rd used precision bombing tactics to drop twenty 600-pound bombs in the path of the volcano's lava flow, thus saving the city of Hilo by diverting the lava away from the city.