Launch of ULA Atlas V rocket with the AEHF-4 satellite
Launch time: 12:15 AM EDT (0415 UTC/GMT) Launch site: SLC-41, Cape Canaveral Air Force Station, Florida Destination: Geostationary orbit A United Launch Alliance Atlas 5 rocket, designated AV-073, will launch the fourth Advanced Extremely High Frequency (AEHF) satellite. Built by Lockheed Martin, this U.S. military spacecraft will provide highly-secure communications. The rocket will fly in the 551 vehicle configuration with a five-meter fairing, five solid rocket boosters and a single-engine Centaur upper stage. Delayed from Dec. 15, 2016. Delayed from Jan. 26, May 4, June 22, June 29 and Oct. 11, 2017. Delayed from July 2018. Moved up from Oct. 18. Delayed from Oct. 4.