Born: United States of America
Primarily active in: United States of America
1912 - 2003
Col. H. Frank Gregory played one of of the most significant roles in launching the helicopter as a vital part of the US military. He was the first serving member of the US Armed Forces to fly a helicopter and accepted the first helicopter to be assessed by the US miltary.
A short biography for Gregory is provided in the AHS 2017 Calendar for the month of February.