The countdown is proceeding and we are GO to fuel the #AtlasV rocket with 66,000 gallons of liquid oxygen and liquid hydrogen. ULA Launch Director Tom Heter III authorized cryogenic tanking operations as the countdown moves forward. Fueling updates: https://t.co/yCCjHu9R5K pic.twitter.com/HEuBXJimhK

— ULA (@ulalaunch) May 6, 2024