reflectivity of the CSM's high gain antenna and broadcast six television transmissions of varying durations to show views inside the spacecraft and of the Earth and Moon from the crew's vantage point. Cernan reported later that he and his crewmates became the first to "successfully shave in space" during the return trip, using a safety razor and thick shaving gel, as such items had been deemed a safety hazard and prohibited on earlier flights. The crew fired the engine of the CSM for the only mid-course correction burn required during the return trip at 188:49:58, a few hours before separation of the CM from the SM. The burn lasted about 6.7 seconds. As the spacecraft rapidly approached Earth on the final day of the mission, Apollo 10 set the record for the fastest human spaceflight, traveling 39,897 km/h (11.08 km/s or 24,791 mph) relative to Earth, which is the fastest speed at which any humans have ever traveled. This is because the return trajectory was designed to take only 42 hours rather than the normal 56. In addition to that record, the Apollo 10 crew are the humans who have traveled the farthest away from their (Houston) homes, at a distance of (though the Apollo 13 crew was 200 km farther away from Earth as a whole). While most Apollo missions orbited the Moon at the same from the lunar surface, the distance between the Earth and Moon varies by about , between perigee and apogee, throughout each lunar month, and the Earth's rotation makes the distance to Houston vary by at most another each day. The Apollo 10 crew reached the farthest point in their orbit around the far side of the Moon at about the same time Earth's rotation put Houston nearly a full Earth diameter farther away. At 191:33:26, the CM (which contained the crew) separated from the SM in preparation for reentry, which occurred about fifteen minutes later at 191:48:54.5. Splashdown of the CM occurred, approximately fifteen minutes after reentry, in the Pacific Ocean about east of American Samoa on May 26, 1969, at 16:52:23 UTC and mission elapsed time 192:03:23. The astronauts were recovered by , onboard which they spent about four hours and took a congratulatory phone call from President Richard Nixon. As they had not made contact with the lunar surface, Apollo 10's crew were not required to quarantine like the first landing