#1 GSW
Asssuming Conscious, alert and oriented.
If bleeding, direct pressure. O2 via Non-Rebreather Mask. Manual C-Spine, Collar, LBB (Back Board), CID (Cervical Immobilization Device) and Secure. EKG. 2 large bore IVs enroute (Can be Saline, Ringers, or 1 and 1. Depending on vitals, the IV may be wide or KVO.
#2 Basically the same thing. O2, C-Spine etc. We do not reduce anything in the field except elbows (gotta check this). Other places are different. (PS. Average ETA to hospital in our area is 10 minutes). Depending on position of shoulder would be immobilived, however, it could be sling and swathe or use the body and backboard straps. Depends on presentation. If concussion presenting (assuming presentation is altered mental status) then IV medium/large bore with Normal Saline KVO, EKG.
In both cases, treat EKG dyrhthmias as appropriate.