
WhiteHousePressCorps @whpresscorps
“The delta symbol...was first used as early as 1942 by the US Army Air Forces; and was used in early Air Force space organization emblems dating back to 1961." "Trek creator Gene Roddenberry served in the Army Air Forces during World War II..." https://t.co/tnV4UcdMSR — PolitiTweet.org
United States Space Force @SpaceForceDoD
The delta was first used in space organizations as early as 1961 and has inspired generations of space professional… https://t.co/r2VyhTnKeL