Biggest U.S. rocket blasts off with spy satellite

delta rocket
A view of the lauinch from a commerecial flight over California on Wednesday, Aug. 28, 2013. (Photo by Robertson Barrett/Yahoo News) (Robertson Barrett/Yahoo News)

An unmanned Delta 4-Heavy rocket, the largest in the U.S. fleet, blasted off from Vandenberg Air Force Base in California on Wednesday to put a classified spy satellite into orbit for the National Reconnaissance Office, officials said Wednesday. (Reuters)