Once it reaches GEO - at around 22,000 miles above the Earth - the satellite will use its sensors and cameras to detect and track infrared events, such as missile launches or other heat-causing events, the release added.
Meteorologist James Wieland says visibility should be good for the launch from Palm Beach County and the Treasure Coast.
ULA officials also said the Atlas V mission to carry the Space Based Infrared System (SBIRS), a missile warning satellite, remains on schedule for Thursday from Cape Canaveral Air Force Station in Florida, pending final vehicle verifications.
Built by Lockheed Martin, the SBIRS GEO 3 satellite is deployed for the USA military to detect missile launches and provide other tactical support.
Initially, it was scheduled to be launched on Thursday, Jan. 19, but it has now been reported that the launch will take place on Friday, Jan. 20, instead.
United Launch Alliance is a joint venture between Lockheed Martin Space Systems and Boeing Defense, Space & Security.
Take 2: ULA set to try rocket launch again tonight
Two satellites like the one launching Friday night are already in space, part of what will be a six-satellite network.
According to the plan, a satellite designed by the U.S. Air Force will take ride on the ULA's Atlas V rocket into the high orbit.
Mission patch for SBIRS GEO Flight 3.
Originally scheduled for an October 2016 launch, the SBIRS GEO Flight 3 satellite was postponed due to concerns over an engine component, produced by a Lockheed Martin supplier.
USA data shows record global temperatures in 2016
The full dataset for the year shows that 2016 was 0.77C above the long-term 1961-90. That 15-month streak is the longest in recorded history.