Whakaotihia te rerenga e whai ake nei: I uru a Gregory ki te Air Force i te tau 1977. I whakawhiwhia ia ki te 47th Flying Training Wing, te 3rd Tactical Fighter Wing, me nga Pacific Air Forces i mua i tana haere ki te Air Command and Staff College me te Industrial College o nga Ope Taua. I muri mai ka mahi ia hei Kaiawhina Hauora ki te Minita mo te Tiaki o te United States i te wa o te
1993 Te Whakaputanga Perehitini. Whai muri i tana tohu i te Whare Wananga Ahumahi o nga Ope Taua i te tau 1994, i tukuna ia ki te mahi me nga Kaiwhakahaere o nga Kaimahi me te noho hei Tumuaki o te Tari Arotake Tahua mo te Tahua o nga Rererangi o te Moana-nui-a-Kiwa i te 1996. I te tau 1999, i whakaingoatia ia hei Kaiwhakahaere Whakahaere Moni me te Kaiwhakahaere o te Air Force Space Command i mua i tana tohatoha ki te Tari o te Kaitohutohu Kaitiaki o te Air Force mo te Whakahaere Moni me te Kaiwhakahaere. I whai mana tana reti mai i te Mahuru 1, 2006.