United Launch Alliance is set to launch an Atlas V rocket Friday.
The rocket will carry the U.S. Air Force's 12th Global Positioning System (GPS) IIF satellite into orbit.
The 19-minute launch window opens at 8:38 a.m. EST.
ULA said the weather forecast shows a 40 percent chance of favorable conditions for launch.
The launch is ULA's first of 2016.
The Air Force's 12th Global Positioning System (GPS) IIF satellite is encapsulated inside an Atlas V 4-meter payload fairing. (United Launch Alliance)