Rocket: Delta IV Medium-plus 5,2; Payload: NROL-25; Date: 3 April 2012, 2312 UTC; Launch Site: Vandenberg Air Force Base. The rocket carried a national security payload for the U.S. National Reconnaissance Office, reportedly with a retrograde target orbit inclined 123 degrees relative to the equator.

Source: U.S. spy satellite lofted by Delta IV