Made during the Apollo program, “Guidance and Navigation” is an official NASA film produced circa 1968 detailing those sophisticated and advanced systems that would take man to the lunar surface. Mark 01:45 shows us mission control in Houston, Texas, where engineers work in front of giant computers where they will monitor the pre-programed flight plan and modify as needed. Astronauts are also shown taking manual readings using a sextant at mark 03:00. Following an animated portrayal of the lunar module in space at mark 04:00, astronauts are shown practicing how to take additional navigational readings when they are in space as well as when they approach the moon. An animation of the lunar module landing on the moon begins at mark 05:08 as the narrator explains the craft will use a computer-guided landing system during the descent and eventual take off and rendezvous with the command module. Additional animations explain how the spacecraft will make its return to Earth.