400MMST

• Unit Name and Meaning: The 400th Missile Squadron (400 MMST), known as the "Unicorns," was a United States Air Force intercontinental ballistic missile (ICBM) unit based at Francis E. Warren Air Force Base, Wyoming. • Origins: The squadron was originally activated during World War II in 1942 as the 10th Reconnaissance Squadron, later redesignated as the 400th Bombardment Squadron, flying B-24 Liberators in the European Theater. • ICBM Role: In 1964, the 400th was reactivated as the 400th Strategic Missile Squadron, becoming one of the first units equipped with the LGM-30 Minuteman I missile, later upgrading to Minuteman III and finally the Peacekeeper (MX) missile. • Peacekeeper Era: The 400 MMST was the only U.S. Air Force squadron to ever operate the LGM-118A Peacekeeper ICBM, which was the most advanced and powerful U.S. missile of its time, capable of carrying up to 10 independently targetable warheads. • Nickname – "Unicorns": The squadron adopted the mascot of a unicorn, symbolizing the unique and unmatched capabilities of the Peacekeeper missile. • End of an Era: The squadron was inactivated in 2005 following the retirement of the Peacekeeper missile as part of post-Cold War arms reduction treaties and modernization efforts. • Strategic Importance: During its operational years, the 400 MMST played a critical deterrent role at the height of the Cold War, providing a significant portion of the United States’ strategic nuclear capability. • Women in Command: The 400th made history when Lt. Col. Cynthia S. Retta became one of the first women to command an ICBM squadron in the Air Force in 2002. • Global Reach: The squadron’s missiles were capable of striking targets anywhere in the world within 30 minutes, emphasizing the rapid response capability of U.S. nuclear forces. • Legacy: Many former members of the 400 MMST contributed to the development of future ICBM systems and remain active in veterans' and missileer organizations, preserving the squadron’s unique heritage.