Skydiving  (Physical/Average)  Defaults DX-5, Parachuting-5,  
Free Fall -3, Acrobatics -2
     This is the ability to manuever while falling.  This 
incorperates moving your body in such a fashon so as to fall more or 
less quickly or to change position horizontally.  At higher levels 
this allows a character to do aerial combat manuevers and acrobatics.  
Preferrably this skill would be used to position yourself prior to 
opening your parachute (assuming you have one!)  =)
Bonuses and Penalties:  -1 per level of encumbrance due to the 
awkwardness of equipment. Usual penalties for restricted movement, 
platemail, arms/legs tied, etc.  Unusally strong or erratic winds at 
-1 to -3, or up to -5 for really severe (near a tornado).  Special 
equipment suited for skydiving manuevers +1 to +5 such as makeshift 
wings or skyboards.
Possible specializations include aerial acrobatics (for performers) 
or skyboarding or combat skyboarding (as a possible passtime for 
space marine and the like).
Examples of this skill in use: Drop Zone, Operation Dumbo Drop, 
Goldeneye (Cinematic).