Colonel Varnadore’s career encompasses a broad range of duties within Army Aviation and Acquisition.  In 1994, he was assigned to the 101^st Airborne Division (Air Assault) as an Air Assault Platoon Leader, EH-60 Quickfix Platoon Leader, and Assistant S-3 Operations Officer.  He was later assigned to the 12^th Aviation Brigade in Wiesbaden, Germany, where he served as the Brigade S-3 Operations Officer prior to assuming Command of Alpha Company, 5-158^th Aviation Regiment.

Colonel Varnadore transitioned to the Army Acquisition Branch in 2001.  His previous acquisition assignments include Program and Plans Officer at the Army Research Laboratory (ARL); Assistant Product Manager (APM) for Aircraft Survivability Equipment at the Technology Application Program Office (TAPO); Rotary Wing Aircraft Systems Acquisition Manager (SAM) for Special Operations Command (SOCOM); Deputy TRADOC Capability Manger (TCM) for Reconnaissance and Attack helicopters within the U.S. Army Aviation Center of Excellence; Product Manager for Airborne, Maritime, Fixed Station (AMF) small airborne radios; and ASA(ALT) Director of Air Defense and Fires.

Colonel Varnadore is the current Project Manager for Integrated Training Environment (ITE) within Program Executive Office for Simulation Training and Instrumentation (PEO STRI).  Colonel Varnadore is also the Project Manager for the Synthetic Training Environment (STE) Cross Functional Team (CFT).

He is a rated Aviator in the UH-1 Huey, UH-60A/L Blackhawk, and EH-60 Quickfix Helicopter.