Mezue ahịrịokwu na-esonụ: Gregory sonyeere ndị agha ụgbọelu na 1977. E kenyere ya na 47th Flying Training Wing, 3rd Tactical Fighter Wing, na Pacific Air Forces tupu ịga Air Command na Staff College na Industrial College nke ndị agha. Ka oge na-aga, ọ rụrụ ọrụ dịka onye enyemaka ndị agha na United States Secretary of Defense n'oge agha ahụ.
1993 Ntinye aka n'ọkwa onyeisiala Mgbe ọ gụsịrị akwụkwọ na kọleji ụlọ ọrụ nke ndị agha na 1994, e kenyere ya ọrụ na Joint Chiefs of Staff wee bụrụ Onye isi nke Ngalaba Nyocha Ego maka mmefu ego nke Pacific Air Forces na 1996. N'afọ 1999, a họpụtara ya onye nduzi nke Njikwa Ego na Comptroller nke Air Force Space Command tupu ekenye ya na Office nke Onye Nkwado Secretary nke Air Force maka Njikwa Ego na Comptroller. Ọ lara ezumike nká na Septemba 1, 2006.