I am in my 30's (just) and I remember Very vividly the last recession, there are alot of people on here who are will not remember this, IT WAS DIRE. I am not saying that we are going into a recession, but with the 'Credit Crunch' and the high costs of oil, companies are battoning down the hatches
I'm in my late 30's and remember bad times too.
The IMF and many others are suggesting that this may be more like the 1930's than the late 80's / early 90's

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Whatever, there will be bad times ahead. At the moment my view is a job is a job, knuckle down, hope to ride out the storm and regroup afterwards.
Its tough to accept I know with many public sector twats going on strike for bigger pay rises, but they will soon get a wake up call too.
I don't think any job is secure at the moment if you move. You could move to a 'secure' airline sure, but you'll be bottom of the seniority list and last in, so when (not if, but when) the inevitable happens you will be first out the door.