[Outlaw Woman]

Skills taught on NOLS courses include backpacking, canoeing, whitewater kayaking, packrafting, caving, rock climbing, fly fishing, horse-packing, sea kayaking, mountaineering, rafting, sailing, skiing, and snowboarding

And the missing skill is......?

[ROCKLOBSTER]

And the missing skill is......?

Bear killin?

[Navy Patriot]

And the missing skill is......?

There would be two:

1) Effective outdoor firearms training and practice, and

2) Identification of politically correct training schools at a safe distance.