Johnny

Human. Weapons Merchant. Connected to Sheila Donovan. He flies a Raven drop ship.

Was introduced in the First Chapter Army Surplus

During Army Surplus

He sold AK-47 and other light weapons like M1911, Shotguns, Grenades,...

Training Manuals

and Type Seven Tactical Nuclear Warheads.

During Precious Cargo it is mentioned that T bought a Ship-cloakin-device from him.