[1] Garretson served as a United States Air Force officer and a writer on space policy and strategy.
Garretson was also an instructor at Air University's Air Command and Staff College, where he leads the Space Horizons Research Task Force[2] and helped develop the Schriever Scholars program.
[5] As of October 2018[update] he is funded by the OSD MINERVA initiative to study contemporary great power attitudes toward space expansionism, territoriality, and resource nationalism.
This research resulted in the book Scramble for the Skies: the Great Power Competition to Control the Resources of Outer Space with Dr. Namrata Goswami.
This biographical article related to the United States Air Force is a stub.