Exploration Flight Test-1 or EFT-1 (previously known as Orion Flight Test 1 or OFT-1) was a technology demonstration mission and the first flight test of the crew module portion of the Orion spacecraft. Without a crew, it was launched on 5 December 2014 at 12:05 UTC (7:05 am EST, local time at the launch site) by a Delta IV Heavy rocket from Space Launch Complex 37B at the Cape Canaveral Air Force Station.
The mission was a four-hour, two-orbit test of the Orion crew module featuring a high apogee on the second orbit and concluding with a high-energy reentry at around 8.9 kilometers per second (20,000 mph). This mission design corresponds to the Apollo 2/3 missions of 1966, which validated the Apollo flight control system and heat shield at re-entry conditions planned for the return from lunar missions.