Project Mercury astronauts could only adjust yaw, pitch, or roll, but Gemini crewmen had full manual control over their flight path. Walter Schirra said that on Gemini 6 "I was amazed at my ability to maneuver. I did a fly-around inspection of Gemini 7, literally flying rings around it, and I could move to within inches of it in perfect confidence". Because there is no turbulence in space "It was like the Blue Angels at 18,000 miles per hour, only it was easier".