Photos: Atlas 5 rocket on the pad with WorldView 4 satellite

Watch the pre-launch news conference held Thursday at NASA’s Kennedy Space Center to preview liftoff of the agency’s TDRS-M data relay satellite aboard a United Launch Alliance Atlas 5 rocket from Cape Canaveral.

The United Launch Alliance Atlas 5 rocket that will hurl the four MMS satellites into a highly elliptical Earth orbit on March 12 has completed its basic build up at Cape Canaveral’s Complex 41 Vertical Integration Facility.

A United Launch Atlas 5 rocket is set to loft three military satellites for the U.S. Air Force on a mission codenamed AFSPC 11. This timeline shows the major mission events planned over a six-hour flight to a near-geostationary orbit.