Glenn F. Spears is a retired United States Air Force lieutenant general now working as a business development consultant.

[11] As a brigadier general, he was commander of the 89th Airlift Wing stationed at Andrews Air Force Base, Maryland.

[11][12] In this position, he commanded 6,200 civilians and officers, and was responsible for ensuring the President and other national leaders were safe while flying globally, a job he held in the aftermath of the September 11 attacks in 2001.

[13][14][15] Within days of Spears taking command of the 89th, Air Force One played a pivotal role for President Bush as commander-in-chief during the 9/11 crisis.

[27] Additionally, Twelfth Air Force was the lead planning agency for designated operations in the Southern Command region.