>> go ahead. understand. >> okay, can you hit the switch on the camera. >> roger. camera has been activated. >> test, mtc. the swing arm camera is on. >> msg. >> copy. >> go. >> the crew is approaching. >> this is saturn launch control. we just passed the 2 hour 21 minute mark in our countdown. we are proceeding at this time. 320 foot level, all three astronauts now aboard the spacecraft. a few minutes ago astronaut buzz aldrin took the center seat to join neil armstrong on the left and mike collings on the right. these are the positions they will fly at liftoff. 120 feet down, the work continues on a leaky valve. 200 foot level. the technicians still hard at work tightening bolts