In June 1966, the name was changed to Lunar Module (LM), eliminating the word "Excursion". According to George Low, Manager of the Apollo Spacecraft Program Office, this was because NASA was afraid that the word "Excursion" might lend a frivolous note to Apollo. After the name change from "LEM" to "LM", the pronunciation of the abbreviation did not change, as the habit became ingrained among engineers, the astronauts, and the media to universally pronounce "LM" as "lem" which is easier than saying the letters individually.