Alpine 848 - Three SEA KING HC.4 from 848 Squadron of the Training Unit of the Commando Helicopter Force have been practicing their mountain flying skills in southern Germany - the men and women from 848 Naval Air Squadron are spending a fortnight at Penzling (west of Munich).    Every two years the makes such as deployment, and will carryout valley flying, pinnacle and ridge approaches and, importantly, wind-finding and assessment techniques. All these sorties are identical to those carried out by Commando Helicopter Force front line crews currently flying in Afghanistan.     The training in southern Germany will be extremely valuable for both student aircrew, operating in an unfamiliar and challenging environment, and also the engineering crews working in a foreign country away from the comforts of their home base.