This is the P-21J Devasator made by Hughes Aviation. The original design made by another user was good but i managed to make it better by adding a retractable gear and a 4 blade propeler with the wings being more spaced out and with the pylons correctly mounted. I focused the model to be more acurate to the Crimson Skies: High Road to Revenge Devastator rather than the older Devastator design in the old Crimison Skies for PC, in my opinion i prefer the newer look than the older one. So anyway to fly this plane is simple. Group 1 VTOL is for the Landing gear and Group 2 VTOL is the thrust nossles on the propler to make it spin i call it feather control. Have fun with this newer version and comment on it if you think i did better by updating it to the Crimson Skies :HRtR model :) Rate and Comment :)