United Launch Alliance is launching its first mission of the year with the launch of its Atlas V rocket from Cape Canaveral, Florida.
The vehicle will be sending an infrared surveillance satellite into a high orbit for the US Air Force. Take off is scheduled for 7:46PM ET, though ULA has a 40-minute launch window in which the rocket can launch anytime before 8:26PM ET.
The satellite built by Lockheed Martin is the third in a series designed to detect and track ballistic missiles from a position 22,300 miles above the equator. A fourth satellite is expected to launch late this year to complete the constellation.