Aviation Photo #1585299: Boeing Delta IV Heavy - USA - Air ForceDelta 4-Heavy roars into orbit with DSP-23, the final Defense Support Program missile-warning satellite, at 8:50pm EST from Launch Complex 37B at Cape Canaveral Air Force Station, November 10, 2007. Delta 4-Heavy, over 23 stories tall, is the world's largest rocket by height and most powerful unmanned booster.
