The C-130 Hercules is a tactical transport aircraft operated by the USAF and the armed forces of at least 70 other nations. In the Syphon Filter games, it is used by the CBDC, Black Baton, Red Section and Spetsnaz.
Syphon Filter 2
The C-130 appears in Syphon Filter 2 being operated by the CBDC. When en route from Khazakstan to Arizona, it is shot down by agency fighters, forcing Gabe Logan and the other CBDC agents on board to evacuate from the aircraft. The C-130 crashes in a box canyon in Colorado with the Syphon Filter data discs still on board; Gabe parachutes into the crash site, while battling Archer's elite hit squad. Gabe eventually discovers that Archer has already found the discs and gives chase to him. He manages to kill Archer and retrieves the discs.
Syphon Filter 3
The C-130 also reappears in Syphon Filter 3, this time being operated by Erich Rhoemer. After sneaking onboard, Gabe locates Rhoemer and ambushes him; however, the enemy survives the encounter with Gabe.
Syphon Filter: Dark Mirror
Lian sees a Red Section C-130 during 'Under NORAD's Nose', and must deploy C4 explosives on it to stop it from taking off. It is here that she learns they were using hi-tech equipment like a signal emitter and a radar jammer to aid their operations.
Syphon Filter: Logan's Shadow
Gabe infiltrates a Spetsnaz-possessed C-130 in the mission 'Deadly Cargo' and hunts for the transponder. He helps Maggie prevent a cockpit breach and then ends up killing Kudrenko when the latter refuses to surrender. Maggie and him are later re-directed onto a tarmac by Cordell's goons who then take the plane into custody.
The C-130 is incorrectly labeled as a C-5 Galaxy Transport in Syphon Filter 3.