The A-4 did not have nose gear steering, the pilot using differential braking to make turns. That was fine for taxiing around airfields, but in the confined areas aboard ship it was an issue. As a result, a steering bar or tiller was used by a flight deck crewman to precisely maneuver the a/c. This was especially important for lining the jet up on the catapult. Here we see the crewman and a/c headed to the starboard catapult aboard USS Lexington.