The AC4400CW is a 4,400 horsepower (3,300 kW) freight locomotive, built by GE Transportation Systems between 1993 and 2004. The engine is practically the same as the earlier C44-9W, but instead utilizes AC traction motors, resulting in 180,000 lbf (800 kN) of tractive effort, compared to the 142,000 lbf (64,410 kgf) of it's DC-powered predecessor. The only real noticeable difference between the two are the AC inverter cabinet of the left side of the AC4400, where the C44 has an air-conditioning unit (which was relocated to underneath the cab on the AC44). AC44: C44-9W: I suggest that a pack of engines be created, similar to the GP40-2 pack that was released back in 2018. The pack should include engines from the following railroads: Union Pacific: CSX (Either YN3 or YN3b schemes): (Note that CSX chose to outfit their AC44s with steerable trucks, rather than the Hi-Ad trucks that the UP, SP, and BNSF used). Southern Pacific: Additionally, I think that BNSF and CSX YN2 marketplace reskins should be developed alongside the main pack: BNSF: CSX YN2: The main pack and MP reskins could include scenarios for some of the following routes: UP: Granger Heartland: Kansas City - Topeka Route. Sherman Hill Route. Peninsula Corridor; San Francisco - San Jose/Gilroy Route. Livonia Division: Monroe - Subdivision Route. CSX: Miami - West Palm Beach Route. CSX Hanover Subdivision: Hanover - Hagerstown Route. Norfolk Southern Coal District Route. SP: Donner Pass: Southern Pacific Route. BNSF: Pacific Surfliner LA - San Diego Route. Cajon Pass Route. Marias Pass Route. Montana Hi-Line: Shelby - Havre Route. Stevens Pass Route. The Racetrack: Aurora - Chicago Route. *UPDATE 9/16/20* Removed Canadian Pacific from the list, seeing as Searchlight Simulations' CP AC4400CW is already going to be coming to Steam sometime in the future.