Aug. 23, 2019 Semper Guard: Former Marine Corps officer begins Nev. Air Guard job at Nellis Judging by his Marine Corps aviation resume, it’s a safe bet the new Deputy Director of the Virtual Test and Training Center Maj. Geoffrey Franks will thrive in the Nevada Air Guard. Franks, whose call sign name is “El Gato,” officially joined the Nevada Air Guard Wednesday during a swearing in