Kittinger is a former command pilot and career military officer in the US Air Force known for setting a number of records, including highest parachute jump and fastest speed reached by a human traveling through the atmosphere. In 1960, as part of the Air Force’s Project Excelsior, he jumped from a balloon nearly 20 miles above the earth and fell for 4 minutes and 36 seconds before opening his parachute. In 2012, 84-year-old Kittinger participated in what historic event? Discuss
Source: The Free Dictionary