[ceejayoz]

I think it's pretty clear the context is commercial air travel here.

"Starvation, suppression, and evacuation" needs neither "emergency landing" nor "don a parachute" to be added to it to be understandable. Both are just prerequisite steps to the "evacuation" mitigation.

[jacquesm]

Well, in a military context 'evacuation' might be 'pull the eject lever', but in a commercial aircraft the landing bit isn't optional because there are no ejection seats and there isn't a way to exit the plane other than after getting it on the ground (or the water) in one way or another.

That prerequisite step may never be completed, due to the aircraft being destroyed before it can be evacuated.